A Body Given Back: Physical Health and Vitality

Introduction

Most of us know the feeling of a body on loan. For forty, fifty, sixty hours a week it belongs, in some quiet but very real sense, to someone else. It sits where the job needs it to sit, wakes when the alarm says, eats what the canteen or the client lunch provides, and exercises in whatever scraps of time are left once the commute, the inbox and the family have taken their share. We tell ourselves that we will get fit ‘when things calm down’. For many people, things never calm down until work itself stops.

This chapter asks a simple and hopeful question: what happens to the body when it is handed back? When the hours that were spent sitting in traffic, sitting in meetings and sitting at screens become, once again, our own to spend, do people move more, eat better, drink less and feel physically well? And does any of this translate into the things that matter most in the long run — fewer aches, more energy, and more good years?

The honest answer, as we shall see, is encouraging but not simple. Large, careful studies following thousands of workers through retirement find that exercise and leisure-time activity usually rise, that people feel markedly healthier, and that some routes into early retirement appear to lengthen life. Yet other equally careful studies find that retirement can bring more sitting, and that for some groups — particularly men who leave work abruptly without a plan — risk can rise rather than fall. The difference seems to lie less in retirement itself than in what we do with the freedom it offers.

That is the spirit of this chapter. Early retirement is not a prescription; it is an opportunity. The people whose stories appear below — a software engineer, an investment banker, a technology chief executive, a hospital doctor and a British couple who swapped the Midlands commute for mountain trails — each used that opportunity to reclaim their physical health. Their experiences, set alongside the research, suggest that the years of freedom can also be years of vitality.

What the research tells us

Exercise tends to rise when work stops

The most consistent finding in the research on retirement and the body concerns deliberate, chosen movement: exercise and leisure-time physical activity. A systematic review by Barnett, van Sluijs and Ogilvie (2012) gathered nineteen studies published between 1980 and 2010 and concluded that exercise and leisure-time physical activity increased after the transition to retirement. Their conclusion carried two important caveats. First, the picture for total physical activity — which includes the walking, lifting and standing that many jobs demand — was inconsistent. Second, socio-economic status mattered: in the studies reviewed, people of higher socio-economic status tended to become more active after retiring, while those of lower status tended to become less so.

One of the clearest individual studies comes from the GAZEL cohort, which has followed employees of France’s national gas and electricity company for decades. Sjösten et al. (2012) examined 2,711 people who retired on a statutory basis between 2001 and 2008 and tracked how often they walked at least five kilometres a week in the four years before and after they stopped work. The prevalence of this higher level of leisure-time activity rose by 36% among men and 61% among women across the retirement transition. Strikingly, the increase was also seen in groups often thought hardest to reach, including smokers and people with elevated depressive symptoms. In a second sample of 3,812 people, those who became or remained inactive gained roughly one kilogram more in weight across retirement than those who stayed active, which underlines how much the choices made in those first years count.

Evidence from economics points the same way. Using a regression-discontinuity design that exploited financial incentives in the German pension system, Eibich (2015) found that retirement improved subjective health and mental health and reduced outpatient care use; among the mechanisms he identified were relief from work-related stress and strain, longer sleep and more frequent physical exercise. Across Europe, Celidoni and Rebba (2017) used data from the Survey of Health, Ageing and Retirement in Europe (SHARE) and changes in pension eligibility rules to estimate causal effects, finding that the probability of doing no physical activity at all fell significantly after retirement — an effect that was stronger among people with more education. In the United States, Insler (2014) used the Health and Retirement Study and concluded that the overall effect of retirement on health was beneficial, with retirees more likely to quit smoking and to exercise more often.

Feeling healthier — and staying that way

How people rate their own health is one of the most powerful predictors of future illness and survival, and here the evidence for retirement is remarkably positive. In the GAZEL cohort, Westerlund et al. (2009) followed 14,714 employees for up to seven years before and seven years after retirement. Between the year before and the year after retirement, the estimated prevalence of ‘suboptimum’ self-rated health fell from 19.2% to 14.3% — a change the authors described as equivalent to a gain in health of eight to ten years. The improvement was seen in men and women and in both lower and higher occupational grades, and it was maintained throughout the seven years after retirement. The only group who did not experience it were those who combined a high occupational grade with low job demands and high job satisfaction; in other words, people whose working conditions were already close to ideal.

A British study of civil servants tells a complementary story. In the Whitehall II cohort, Jokela et al. (2010) followed 7,584 people over fifteen years and found that, compared with continued employment, both statutory retirement at 60 and early voluntary retirement were associated with slightly better physical functioning (around one point higher on a standardised scale), as well as better mental health. Retirement due to ill health, by contrast, was associated with poorer physical functioning — but the authors’ within-person analyses suggested this reflected illness leading to retirement, rather than retirement causing illness.

Newer Swedish evidence goes further, speaking directly to early retirement. In the HEARTS study, Hansson et al. (2025) followed 5,913 adults aged 60 to 74 through nine annual waves and found average improvements across health domains after retirement, with more pronounced benefits among those who retired early. The authors framed their findings in terms of ‘push’ and ‘pull’ factors: people pushed out of work and those who loved their jobs fared differently from those pulled towards a life they wanted.

What does not change — and what can get worse

It would be a disservice to readers to pretend that stopping work melts away disease. In a second GAZEL analysis, Westerlund et al. (2010) examined respiratory disease, diabetes, and coronary heart disease and stroke in more than 14,000 people. The cumulative prevalence of these conditions increased with age, with no break in the trend around retirement. Retirement did not, on this evidence, prevent the major chronic diseases of later life. (It did, as Chapter 2 describes, bring a dramatic fall in fatigue.) A systematic review of 22 longitudinal studies reached a similar verdict: strong evidence that retirement benefits mental health, but contradictory evidence regarding perceived general health and physical health (van der Heide et al., 2013).

Nor does freedom automatically mean movement. When researchers attached accelerometers to Finnish retirees rather than relying on questionnaires, the picture became more complicated. Suorsa et al. (2021) followed 689 ageing workers in the Finnish Retirement and Aging (FIREA) study and found that women increased their total sedentary time by about 22 minutes a day, and their prolonged sedentary time (bouts of 30 minutes or more) by about 34 minutes, across the transition to retirement — with the largest increases among women retiring from manual occupations. Men did not show an abrupt change, but their prolonged sitting crept up gradually over the post-retirement years. A pooled Swedish–Finnish accelerometer study of 245 people similarly found that total physical activity fell by about eleven minutes a day after retirement, while moderate-to-vigorous activity stayed stable (Fröberg et al., 2024). A later systematic review confirmed that high socio-economic groups tended to experience more favourable changes in physical activity and sedentary time than low socio-economic groups (Vansweevelt et al., 2022).

The lesson is not that retirement makes people sedentary, but that the incidental movement built into many jobs — the commute on foot, the shop floor, the hospital corridor — disappears overnight, and has to be replaced on purpose. Where people replace it, the benefits of retirement flourish; where they do not, the sofa can quietly win.

Longevity: a genuinely mixed picture

No question in this field attracts more headlines, or more confusion, than whether early retirement shortens or lengthens life. The evidence genuinely points in different directions, and it is worth understanding why.

Some studies are sobering. Among former employees of Shell Oil in the United States, those who retired at 55 and were still alive at 65 had higher subsequent mortality than those who retired at 65 (Tsai et al., 2005). Using the US Health and Retirement Study, Wu et al. (2016) found that among 1,934 ‘healthy retirees’, each additional year of working was associated with an 11% lower risk of death from any cause. Both studies, however, are observational: people who retire early may differ in many hidden ways from those who keep working, and it is notoriously difficult to separate the effect of retirement from the reasons people retire.

To get around this, economists use ‘natural experiments’ — policy changes that nudge some people to retire earlier than otherwise identical people. These, too, disagree. Fitzpatrick and Moore (2018) found a roughly 2% rise in male mortality in the United States immediately after age 62, when Social Security becomes available; the clearest increases were in deaths from traffic accidents, chronic obstructive pulmonary disease and lung cancer, consistent with changes in behaviour such as smoking (National Bureau of Economic Research, 2018). In Austria, Kuhn et al. (2020) studied a change in unemployment insurance that allowed some older workers — largely blue-collar — to leave the labour force years earlier, and found that earlier exit increased the risk of premature death among men, but not among women.

Other natural experiments find the opposite. In the Netherlands, an unexpected temporary lowering of the early-retirement eligibility age for civil servants allowed Bloemen, Hochguertel and Zweerink (2017) to show that induced early retirement reduced the probability of a man dying within five years by 2.6 percentage points. In Sweden, a targeted early-retirement offer to military officers aged 55 and over led to reductions in both mortality and in-patient hospital care (Hallberg, Johansson and Josephson, 2015). And in Norway, using data covering the whole population, Hernæs et al. (2013) found no effect of retirement age on mortality at all.

How can all of these be true? Partly because ‘retirement’ means very different things in different places. Leaving a desk job with a secure pension to take up walking, cycling and grandparenting is not the same as being eased out of manual work on unemployment benefits into isolation and inactivity. The studies finding harm tend to highlight the behavioural channels — smoking, drinking, driving, loneliness — while those finding benefit tend to involve people with the security and resources to use their time well. The encouraging implication is that much of the risk lies in modifiable habits.

And those habits matter enormously. In a pooled analysis of 661,137 adults, Arem et al. (2015) found that people who did even some leisure-time physical activity — less than the recommended minimum — had a 20% lower risk of death than those who did none, rising to a 31% lower risk at one to two times the recommended minimum, and a benefit threshold at three to five times that level. The UK’s Chief Medical Officers advise adults to accumulate at least 150 minutes of moderate-intensity activity (or 75 minutes of vigorous activity) each week, to do muscle-strengthening activities on at least two days a week, and to minimise and break up long periods of sitting (Department of Health and Social Care, 2019). For someone who has just been given back fifty hours a week, those targets are no longer a juggling act; they are an invitation.

Lives enriched: real stories

Pete Adeney — the engineer who made movement a way of life

Pete Adeney, better known as the blogger Mr. Money Mustache, left his software engineering career in 2005, at around the age of 30, having lived on roughly half of what his peers spent and invested the difference (Adeney, no date). By his own account, his early retirement became a laboratory for a physically active life. Writing in 2016, at 42, he described himself as an ‘average’ former office worker who had never played competitive sport, yet reported that ‘all systems seem to be better than ever’ despite having no gym membership (Adeney, 2016).

His philosophy is captured in the principle he calls ‘Principle Zero: Moving is Normal, Sitting Still is Hazardous’ (Adeney, 2016). Rather than treating exercise as a separate chore, he folds it into the day: walking or cycling for errands, doing his own carpentry, taking calls on foot, and lifting heavy things in short, efficient bursts. On his best days, he writes, he might spend four to ten hours walking or biking for errands, carpentry and simple strolls, and those days result in ‘incredible happiness’ (Adeney, 2016). His story illustrates one of the central findings of the research above: when the incidental movement of the working day disappears, it can be replaced — and multiplied — by design.

Sam Dogen — the banker whose pains disappeared

Sam Dogen, who writes the Financial Samurai blog, spent thirteen years in investment banking before negotiating his exit in 2012, when he was in his mid-thirties. In a candid account of his health, he lists the ailments that accumulated during his working years: chronic lower back pain and sciatica, tennis and golfer’s elbow, allergies, teeth grinding and jaw (TMJ) problems, and a gain of about twenty pounds in his first year of work (Dogen, 2020).

After leaving, the change was swift. ‘By the sixth month after leaving my job, EVERY PAIN went away,’ he writes (Dogen, 2020). Freed from long days and constant client dinners, he increased his exercise from about twice a week to four times a week, often playing tennis for hours at a time, and by the end of his first year of early retirement his weight had fallen to 158–160 pounds (Dogen, 2020). He is careful to attribute most of this to the removal of stress rather than to any miracle, writing that he firmly believes stress is ‘the main source for many of our health problems’ (Dogen, 2020). His experience echoes the GAZEL finding that the largest improvements in self-rated health after retirement were seen among people with a poor work environment and health complaints before they left (Westerlund et al., 2009).

Shawn Jenkins — the ‘10-10-10’ experiment

Shawn Jenkins co-founded the software company Benefitfocus and led it for nearly twenty years before retiring early on 1 January 2018. Reflecting eighteen months later, he explained that although he loved his company, work stress had led to lack of sleep, weight gain and ‘a host of related nuisance ailments’ (Jenkins, 2019). He deliberately did nothing dramatic at first: he simply wanted to remove the stress and see how his body responded, ‘similar to a scientist isolating a single variable in a lab experiment’ (Jenkins, 2019).

The results surprised him. ‘In the first six months, I experienced what I now call a 10-10-10 improvement,’ he writes: without much effort he lost ten pounds, his blood pressure came down ten points and his resting heart rate fell by ten beats per minute (Jenkins, 2019). Over the following year he added a structured plan — cycling two miles to a personal trainer three times a week and overhauling his diet — and lost a further twelve pounds while improving his blood pressure and heart rate further. What struck him most was having the time to experiment: to try different foods, routines and forms of exercise without cramming them between busy work periods. His account shows both halves of the research story: some benefits arrive simply from removing strain, while others come from actively investing the time that freedom provides.

Leif Dahleen — from the operating theatre to the marathon start line

Leif Dahleen, the physician behind the Physician on FIRE blog, walked out of the hospital for what may be the last time as an employed anaesthetist in August 2019, at 43 (Dahleen, 2020). Three years later he reflected on the physical side of that decision with evident delight. Freed from rushed mornings, he made body-weight exercise part of his daily routine and estimates that he has done around 100,000 press-ups and a similar number of sit-ups in two and a half years (Dahleen, 2022). In his first year of early retirement he and his wife ran a half marathon in Barcelona, and at the time of writing he was training for his first full marathon (Dahleen, 2020; Dahleen, 2022).

He is also honest about the setbacks — a stress fracture from too much running, and nagging injuries along the way — but reports that his resting heart rate had fallen to the low-to-mid 40s and that, ‘it’s not a stretch to say that I’m in the best shape of my life’ (Dahleen, 2022). As he puts it, it is much easier to make physical fitness a priority ‘when work never gets in the way’ (Dahleen, 2022). For a profession notorious for overnight calls and irregular meals, his experience shows how powerfully time can be converted into health.

Jason and Julie Buckley — from the Midlands commute to ultramarathons

Jason and Julie Buckley, who write the OurTour blog from Nottingham, first left their corporate jobs in 2011, both aged 39, to travel Europe and North Africa in an old motorhome. After returning to work for a short, intense period to secure their finances, they effectively retired at 43 (Buckley and Buckley, no date). Looking back on a decade of early retirement, Jason is refreshingly frank about the risks. He had worried about research linking retirement to declining health; he noticed that drinking was easy to slip into among expatriate communities; and by the time he stopped work his weight had crept close to the NHS definition of obesity (Buckley, 2025).

During a period of low mood he decided to set himself a challenge, returning to the running he had enjoyed in his twenties and entering an uphill half marathon in the Swiss Alps. He went on to lose about 20kg and give up alcohol completely, and has since run numerous marathons and ultramarathons (Buckley, 2025). Julie, too, has run a marathon and regularly takes part in parkruns, 10k races and half marathons. Jason now spends about ten hours a week running and training in the gym — roughly the time he once spent commuting (Buckley, 2025). Their story is a very British illustration of the research: retirement did not make them healthy by itself, but it gave them the time to decide to become so.

A balanced view

It would be easy, reading the stories above, to conclude that early retirement is a fountain of youth. The evidence does not support so simple a claim, and it is worth being clear about its limits.

First, retirement does not appear to prevent the major chronic diseases of later life. In the GAZEL cohort, the prevalence of respiratory disease, diabetes, and coronary heart disease and stroke continued to rise with age, with no break around retirement (Westerlund et al., 2010). Reviews find the evidence for physical health, as opposed to mental health, to be contradictory (van der Heide et al., 2013).

Second, the gains are unevenly shared. People of higher socio-economic status tend to become more active after retiring, while people of lower status are more likely to become less active (Barnett, van Sluijs and Ogilvie, 2012; Vansweevelt et al., 2022). Using the US Health and Retirement Study, Dave, Rashad and Spasojevic (2008) found that complete retirement was associated with increases in difficulties with mobility and daily activities and in illness conditions, with the adverse effects smaller among those who remained physically active, were married, had social support or continued some part-time work. Objective measurement also shows that sitting time can rise, particularly for women leaving manual jobs (Suorsa et al., 2021).

Third, the longevity evidence is genuinely mixed. Some well-designed studies find higher male mortality after retirement (Fitzpatrick and Moore, 2018; Kuhn et al., 2020), while others find lower mortality (Bloemen, Hochguertel and Zweerink, 2017; Hallberg, Johansson and Josephson, 2015) or no effect (Hernæs et al., 2013). Observational findings that later retirement goes with longer life (Tsai et al., 2005; Wu et al., 2016) are difficult to disentangle from the fact that less healthy people often retire earlier. Honest readers should hold all of these results at once.

Finally, the personal stories in this chapter are, by definition, stories people chose to tell. They come from people with the financial security to retire on their own terms, and most of them are describing the years immediately after leaving work. They illustrate what is possible, not what is guaranteed. The thread running through both research and stories, however, is consistent: the benefits of early retirement for the body are real but must be claimed. Movement, sleep, food and friendship do not arrive automatically with the last payslip; they are built, day by day, in the space that work leaves behind.

Putting it into practice

• Replace the movement your job used to give you. Before you leave, notice how much walking, standing and carrying your working day involves. Plan to replace it deliberately — a daily walk, cycling for errands, gardening or DIY — so that your baseline does not quietly fall.
• Aim for the guidelines, then beyond. The UK Chief Medical Officers recommend at least 150 minutes of moderate activity (or 75 minutes of vigorous activity) a week, plus strength work on at least two days (Department of Health and Social Care, 2019). With a free diary, both are within reach; the evidence suggests more activity brings further benefit up to several times that level (Arem et al., 2015).
• Break up long periods of sitting. Retirement can bring more time on the sofa or at the computer. Set a simple rule — stand and move every half hour — and treat long, unbroken sitting as the one habit to guard against.
• Build strength, not just stamina. Muscle strength protects independence in later life. Body-weight exercises, a pair of dumbbells or a local strength class can be fitted into any morning.
• Choose a meaningful challenge. A parkrun, a long-distance footpath, a charity cycle or a first half marathon gives shape to the week and a reason to train — as it did for Jason Buckley and Leif Dahleen.
• Watch the ‘holiday habits’. Longer lunches and a later start can make drinking and snacking creep up. Decide in advance what your everyday norms will be.
• Use the first year well. Research suggests the retirement transition is a window when habits are unusually open to change (Sjösten et al., 2012). Treat your first year of freedom as a deliberate reset.
• Keep up with health checks. Retirement does not stop chronic disease on its own (Westerlund et al., 2010). Use your extra time to attend screenings, NHS Health Checks and dental and eye appointments you once postponed.
• Stay connected while you move. Walking groups, sports clubs and volunteering combine physical activity with the social contact that protects health — and help to guard against the isolation that some studies link with poorer outcomes.

Questions for reflection

1. Where does movement currently come from in your working week, and how would you replace it if work stopped tomorrow?
2. Which physical aches, niggles or habits do you suspect are linked to your job — and which would you expect to continue regardless?
3. If you had an extra fifty hours a week, what physical activity would you genuinely look forward to doing?
4. What might a realistic ‘first-year reset’ look like for your body — and who could share it with you?
5. The research suggests that people with more resources tend to gain more from retirement. What resources — money, knowledge, community, green space — could you build now to tilt the odds in your favour?
6. How do you feel about the mixed evidence on longevity? What would you need to do to be on the positive side of those statistics?
7. Whose example, among the stories in this chapter, speaks most to you — and why?

References