The recommendations
The WHO guidelines, updated in 2020 and adopted almost verbatim by national health agencies, advise adults to:
- Accumulate 150 to 300 minutes of moderate aerobic activity a week (brisk walking, easy cycling, swimming, heavy gardening), or 75 to 150 minutes of vigorous activity, or an equivalent mix.
- Do muscle-strengthening activity on at least two days a week, covering the major muscle groups.
- Reduce sitting time, replacing it with activity of any intensity.
The important change in that revision: the old "minimum ten minutes per bout" threshold was dropped. Every minute counts, including commuting, stairs and short walks — good news for constrained schedules.
What it buys you
The benefits of regular activity are among the best established in preventive medicine: lower risk of cardiovascular disease, type 2 diabetes, several cancers (notably bowel and breast), high blood pressure and falls in later life. On top of that come marked effects on sleep, anxiety and mood — exercise is a recommended treatment for mild to moderate depression in national clinical guidance.
A simple home routine
No gym or equipment needed: three twenty-minute sessions a week produce clear progress. Do three rounds of this circuit, with a minute's recovery between rounds:
- Squats — 12 to 15 reps. Back straight, knees tracking over the feet.
- Press-ups — 8 to 12 reps, from the knees or against a wall to start.
- Lunges — 10 per leg, for balance and legs.
- Plank — 20 to 40 seconds, body in line, without letting the lower back sag.
- Glute bridge — 15 reps, lying on your back; useful against lower back pain.
Increase repetitions first, then rounds. Consistency beats intensity by a wide margin — over-enthusiastic first sessions are what produce soreness, discouragement and abandonment.
A few precautions
Over 35, after a long inactive period, or with a chronic condition, chest pain, unusual breathlessness or joint problems, check with your doctor before starting. Sharp joint pain during exercise is never something to push through: it means the movement needs adapting.
Moving without "doing sport"
The activity that counts is the one you keep doing. For many people it looks nothing like sport: getting off a stop early, taking the stairs, walking to the shops, gardening, dancing, playing with children. A realistic goal sustained for six months is worth far more than an ambitious membership abandoned in three weeks.