I'll be honest with you about something: for most of my adult life, I treated my health as an afterthought. I ate when I was hungry. I slept when I could. I exercised when I felt motivated — which, as anyone who has relied on motivation for exercise will know, meant not nearly often enough.
In my late 50s, that approach started to catch up with me in ways I couldn't ignore. Energy levels. Mental clarity. The way I felt at the end of a day. It wasn't dramatic. It was just a slow, steady decline in the quality of how I felt — and when I was honest with myself, I knew exactly why.
I started researching longevity seriously. Not supplements, not biohacking gadgets, not extreme diets. The fundamentals. And what I found was surprisingly consistent across almost all the research: three core habits account for the vast majority of the difference between people who are vital and sharp at 80 and people who aren't.
These are the three I have built into my daily life — and they are the ones I'd start with if I were building from scratch.
Habit One: Protect Your Sleep Like It's Your Most Important Asset
Sleep — at least 8 hours, every night
Most men in their 60s are chronically undersleeping and have normalised it. They wear it as a badge of productivity. The research is unambiguous: it is one of the most damaging things you can do to your long-term health.
Sleep is when your brain clears the metabolic waste that accumulates during the day — including the proteins associated with cognitive decline. It is when your body repairs muscle tissue, regulates hormones, and consolidates memory. Cutting sleep short, even by 60–90 minutes a night, has measurable negative effects on insulin sensitivity, immune function, and cardiovascular health.
For men specifically, chronic sleep deprivation is associated with significantly reduced testosterone levels, increased cortisol, and impaired decision-making. You don't notice the gradual decline because you adapt to feeling worse — but you're operating far below your capacity.
My commitment is simple: I schedule 8 hours of sleep every day. Not 6 hours and a coffee. Not 7 hours and a weekend lie-in. Eight hours, every night, as a non-negotiable appointment with myself.
You cannot buy back the hours of repair your body needed last night. Sleep debt is real, and the compounded cost is measured in years of life, not just days of tiredness.
Practically, this means I go to bed at the same time each night, keep the bedroom cool and dark, and treat anything that encroaches on those 8 hours with the same resistance I'd give to someone trying to cancel an important meeting. Because that's what it is.
Habit Two: Move Every Single Day — Without Exception
Daily movement — scheduled and non-negotiable
Not three times a week. Not when the weather's good. Every day. The research on sedentary behaviour in men over 60 is stark: even 30–45 minutes of moderate daily movement is associated with dramatically lower rates of cardiovascular disease, type 2 diabetes, cognitive decline, and all-cause mortality.
The key word is daily. The habit of daily movement is qualitatively different from intermittent exercise. It changes your baseline. Your body starts to expect and prepare for movement. Your resting metabolism shifts. Your mood and energy stabilise in ways that three-times-a-week exercise simply doesn't produce.
I schedule exercise in my diary every day, the same way I schedule meetings. If it's not in the diary, it doesn't happen — because something else always fills the gap. When it's in the diary, it happens, because I've made the decision in advance and I'm just executing it rather than negotiating with myself about whether I feel like it.
The type of exercise matters less than the consistency. Brisk walking is excellent. Strength training becomes increasingly important as we age, because muscle mass and bone density decline significantly after 60 if we don't actively work to preserve them. A combination of both — some cardiovascular work and some resistance training — is ideal. But the single most important thing is to move every day, in whatever way you can sustain.
Key Insight
The men who are still active, sharp, and independent at 85 are almost universally the men who maintained daily movement habits through their 60s and 70s. This is not a coincidence. Physical capability, like most things worth having, is built through consistent daily effort — not weekend surges.
Habit Three: Give Your Body a Rest From Eating
Intermittent fasting — the 16:8 window
This is the habit I was most sceptical about. It felt like a trend. But the more I read, the more the evidence persuaded me — and once I started, the results were undeniable enough that I haven't looked back.
The 16:8 approach is simple: you eat within an 8-hour window each day and fast for the remaining 16 hours. No elaborate meal plans, no calorie counting, no exotic foods. Just a time boundary around when you eat.
For me, my eating window typically runs from midday to 8pm. I have my first meal at lunch and my last at dinner. In the morning, I have water, black coffee, or unsweetened tea — nothing that triggers an insulin response.
What happens during the fasting window is what makes this so powerful for longevity. After roughly 12–14 hours without food, your body begins a process called autophagy — a kind of cellular housekeeping where it breaks down and recycles damaged proteins and cellular components. This process is associated with reduced inflammation, improved insulin sensitivity, and lower risk of several age-related diseases.
Beyond the cellular benefits, I've noticed tangible changes in my own experience: clearer thinking in the morning, more stable energy through the day, and a genuine reduction in the mindless snacking that used to fill the gaps between meals without adding anything of real value.
I follow what I call a 16/8/2 system — 16 hours fasting, 8 hours eating, and I aim for 2 main meals within that window. It took about two weeks to adapt. After that, it became effortless. My body simply adjusted to the new rhythm, and I stopped feeling hunger in the mornings the way I used to.
The Compound Effect: Why These Three Work Together
Here is what I've learned from living with these three habits: they are not independent. They compound each other in ways that make the whole significantly more powerful than the sum of the parts.
Good sleep improves your motivation and ability to exercise. Exercise improves your sleep quality. Intermittent fasting reduces inflammation, which makes recovery from exercise faster. Exercise stabilises blood sugar, which makes the fasting window easier to maintain. Better sleep and stable energy make it far easier to resist the impulse to break the eating window.
Once all three are established — and it typically takes 4–6 weeks to build the full routine — you enter a positive feedback loop. Your body starts working with you rather than against you.
How to Start If You're Currently Doing None of This
Don't try to implement all three simultaneously. Pick one and commit to it for two weeks before adding the next. I'd suggest starting with sleep, because the improvements in energy and mood that come from proper rest make everything else significantly easier to initiate.
Week 1–2: Set a consistent bedtime and wake time. Protect 8 hours in between.
Week 3–4: Schedule 30 minutes of movement into your diary every day. Walk, cycle, swim — whatever you'll actually do. Show up for it the way you'd show up for a meeting.
Week 5–6: Introduce the eating window. Start with a 12-hour fast and extend gradually to 14 and then 16 hours as your body adapts.
By week 8, you will be a different person to the one who started. Not because anything dramatic has happened — but because you've rebuilt your baseline. And from that new baseline, the next ten years will look very different to what they would have been.
We cannot control everything about how we age. But we control far more than most men act on. These three habits are free. They require no equipment, no supplements, no specialist knowledge. They require only the decision — made once, then honoured daily — to take your body and your longevity seriously.
That decision is one of the most important you'll ever make.