Q.Explain in detail the WHO exercise guidelines for the different age groups — children and adolescents (5–17 years), adults (18–64 years) and older adults (65 years and above).

WHO Physical Activity Guidelines for Different Age Groups

The World Health Organization (WHO) prescribes specific physical activity targets for each life stage, based on the health benefits that different types and durations of activity provide.

Children and Adolescents (5–17 years)

The primary goal for this group is to build healthy bones, muscles, and cardiovascular fitness, and to prevent the early onset of non-communicable diseases. The guideline is clear: at least 60 minutes per day of moderate-to-vigorous physical activity (MVPA). Most of this daily hour should be aerobic. To strengthen the musculoskeletal system, vigorous-intensity activities, along with specific muscle and bone-strengthening exercises (like running, jumping, or climbing), should be incorporated at least 3 days per week. Exceeding 60 minutes provides additional health benefits.

Adults (18–64 years)

For adults, the focus shifts to maintaining cardiovascular health, managing weight, and reducing the risk of chronic diseases like diabetes and hypertension. The weekly target can be met in two equivalent ways:

• 150–300 minutes of moderate-intensity aerobic activity (e.g., brisk walking, cycling), OR
• 75–150 minutes of vigorous-intensity aerobic activity (e.g., running, swimming laps). A combination of moderate and vigorous activity is also acceptable. Additionally, muscle-strengthening activities involving all major muscle groups should be performed on 2 or more days per week.

Older Adults (65 years and above) …

The World Health Organization (WHO) physical activity guidelines are built on a simple principle: movement is medicine, but the dose changes with age. A toddler’s needs are not an adult’s, and an older adult’s risks are not a teenager’s. The guidelines are designed to prevent non-communicable diseases, support healthy growth, and maintain functional independence. Let’s walk through each age band.

Children and adolescents (5–17 years)

This group needs the most daily activity. The guideline is clear: at least 60 minutes of moderate-to-vigorous physical activity every day. Most of this should be aerobic — think running, cycling, swimming, or active play. But the WHO doesn’t stop there. On at least three days a week, that 60 minutes should include vigorous activity (activities that make you breathe hard and fast) and activities that strengthen muscles and bones — like skipping, climbing, or games involving jumping.

Why the emphasis on daily? Because children’s cardiovascular systems, bones, and muscles are developing rapidly. Regular activity builds a foundation for lifelong health, reduces the risk of obesity, and supports mental well-being. Missing a day here and there isn’t a crisis, but the target is daily, not weekly.

Adults (18–64 years)

For adults, the focus shifts from daily minimums to weekly totals. The WHO recommends at least 150–300 minutes of moderate-intensity aerobic activity per week, or at least 75–150 minutes of vigorous-intensity aerobic activity, or an equivalent combination of the two. Moderate activity means you can talk but not sing (brisk walking, gentle cycling). Vigorous means you can’t say more than a few words without pausing for breath (jogging, fast swimming, singles tennis).

In addition, adults should do muscle-strengthening activities involving all major muscle groups on two or more days a week. This could be weight training, bodyweight exercises (push-ups, squats), or resistance bands.

The logic is straightforward: aerobic activity protects the heart and lungs, while strength training maintains muscle mass and bone density, which naturally decline with age. The 150-minute threshold is the minimum for substantial health benefits; going up to 300 minutes yields even greater protection against cardiovascular disease, diabetes, and some cancers.

Older adults (65 years and above)

The guidelines for older adults start with the same aerobic and muscle-strengthening recommendations as for adults aged 18–64. But there is a critical addition: on three or more days a week, older adults should engage in varied multicomponent physical activity that emphasises functional balance and moderate-or-greater-intensity strength training. This is to prevent falls — the single biggest cause of injury and loss of independence in this age group.

Balance activities include standing on one foot, heel-to-toe walking, tai chi, or yoga. Strength training should target the legs, hips, and core, as these are the muscle groups that keep you upright and stable. The “varied multicomponent” part means the activity should combine balance, strength, and aerobic elements — not just one in isolation. …