How to Live to 100 in Good Health: 10 Rules, From Movement to Prevention

Would you like to still walk to the market on your own and keep learning new things at 100? The secret isn't an expensive pill or a special diet. Research shows that a long, energetic life is built from simple habits repeated every day.

Here they are as 10 rules, each with a small first step.

Why habits matter so much

Genes play a role, but they don't decide everything. A US observational study of more than 120,000 people looked at five habits: not smoking, a healthy weight, at least 30 minutes of activity a day, a healthy diet and limited alcohol. People who followed all five at age 50 had a life expectancy about 14 years longer for women and 12 years longer for men (Circulation, 2018).

Habits shape the quality of those years too: strong muscles, a clear mind and independence. And none of them is expensive.

Movement

1. Walk every day

Walking is the simplest workout there is. An analysis of 15 international studies found that the benefit peaks at roughly 8,000–10,000 steps a day before 60 and 6,000–8,000 steps after 60 (Lancet Public Health, 2022).

If you walk less today, add 1,000 steps at a time: take the stairs, walk short trips, and in hot summers walk in the cool morning or evening.

2. Train your muscles and balance

After 30, muscle mass slowly declines, so it pays to protect it on purpose. WHO recommends strength training on at least 2 days a week: squats, wall or floor push-ups, band rows and planks.

After 50, add a few minutes of daily balance practice, such as standing on one leg for 30 seconds next to a chair.

Nutrition

3. Fill half your plate with vegetables and add protein to every meal

WHO recommends at least 400 g of vegetables and fruit a day, roughly five handfuls; seasonal tomatoes, carrots, cabbage, greens and pomegranates are affordable. Choose whole-grain bread over white.

Add a palm-sized portion of protein to each main meal: eggs, fish, chicken, yogurt, strained yogurt (suzma), mung beans, chickpeas or beans. We need more protein as we age.

4. Cut back on salt and sugar, drink water

WHO advises keeping salt under 5 g a day (about a teaspoon) and free sugars under 10% of daily energy. Much of our salt comes from bread, dried salty yogurt balls (qurt), pickles, sausage and ready-made seasonings, so taste before you salt.

Swap sugary drinks for water or unsweetened tea; 6–8 glasses a day suits most people (with heart or kidney disease, your doctor sets the amount).

Sleep

5. Sleep 7–9 hours

Adults need at least 7 hours of sleep a night, and after 65, 7–8 hours is usually enough (CDC). Good sleep protects your heart, blood sugar, mood and memory.

Go to bed and get up at the same time every day, weekends included. Keep the bedroom cool, dark and quiet. Switch off your phone and TV an hour before bed, and skip coffee and strong tea after 2 pm.

Mind

6. Ease stress and keep learning

Long-lasting stress raises blood pressure and disrupts sleep. Ten quiet minutes a day calms the nervous system: slow breathing (in for 4 counts, out for 6), prayer or a peaceful walk.

Your brain needs exercise just like your muscles: reading, a new language, chess or a new craft help keep your thinking sharp for years.

Connection

7. Connect with someone close every day

In an analysis of 148 studies, people with strong social relationships were on average 50% more likely to survive the study period (PLOS Medicine, 2010).

Call or visit a parent, friend or relative every day: not just a text, a real conversation.

8. Be useful to someone

Helping out in your mahalla (neighborhood), a neighbor or a grandchild brings meaning and new friendships. One small kindness a week counts.

Prevention

9. Know your numbers

Blood pressure, blood sugar, cholesterol and waist size often change for years without any symptoms. See your family doctor once a year, and after 40 check your blood pressure at home regularly too. Waist targets: under 94 cm for men and under 80 cm for women. Other screenings depend on your age and sex.

10. Say no to tobacco, naswar and alcohol

The benefits of quitting smoking start fast: within 20 minutes your heart rate and blood pressure drop, and after a year your risk of coronary heart disease is about half that of a smoker (WHO). Naswar is a tobacco product too, and giving it up protects your mouth.

There is no safe level of alcohol for health (WHO, 2023), so less is better. If quitting is hard, ask a doctor for help. That's smart, not weak.

The 10 rules at a glance

Where to start

Habits take root best when they are small and specific.

1. Pick one rule, the one that feels easiest.
2. Tie it to a time: "after breakfast I walk for 10 minutes."
3. Mark every day you do it; each one makes the next easier.
4. Once it feels automatic, add the next rule. Missed a day? Just carry on tomorrow.

One step a day with the 100 Yosh app

The 100 Yosh app builds a daily plan for your age and sex across all six pillars: steps, strength training, protein, sleep, a talk with someone close and a day free of harmful habits. The Roadmap shows your life stages up to 100 and which check-ups you need at each age, and the app reminds you when one is due. It's free and has no ads.

This article is for general information and is not medical advice — talk to your doctor before making decisions about your health.