How Activity Needs Change as You Age

The physical activity guidelines that researchers and public health organizations have developed over the years aren't the same for a ten-year-old as they are for a 70-year-old. The volumes are sometimes similar. The reasons behind them aren't.

Understanding what each stage is actually aimed at makes the numbers more meaningful and easier to apply.

Children and teenagers

Kids should get around 60 minutes of moderate to vigorous physical activity per day. This can be spread through the day, not necessarily one continuous block.

Bone-loading activities are specifically important during this stage. Running, jumping, and impact sports place stress on developing bones in ways that stimulate bone density gains. The window for peak bone mass development closes in early adulthood, which makes adolescence a particularly valuable time for this kind of activity.

Muscle-strengthening activities are also recommended at least three days per week. For kids, this doesn't mean lifting weights. Climbing, gymnastics, and sports that involve running, jumping, and changing direction all count.

The practical version: active play, sports, and physical education are doing real developmental work, not just burning energy.

Adults

Adults should aim for 150 to 300 minutes of moderate-intensity aerobic activity per week, or 75 to 150 minutes of vigorous-intensity activity, or some combination of both. Strength training targeting all major muscle groups is recommended at least two days per week.

For adults, the goal is building and maintaining capacity. Cardiovascular fitness, muscular strength, and metabolic health are all improved by meeting these targets. The risk reductions associated with regular physical activity across this life stage are well established: lower risk of cardiovascular disease, type 2 diabetes, certain cancers, and premature mortality.

This is the stage where the foundation is laid. The capacity you build in your 30s, 40s, and 50s is what you'll draw from later.

Older adults

Older adults generally follow the same aerobic and strength guidelines as younger adults. What changes is the emphasis.

Balance training and fall prevention become explicit priorities. Activities that challenge balance, things like tai chi, yoga, or single-leg exercises, are specifically recommended. Falls are among the most serious health events for older adults, and maintaining balance and coordination through exercise is one of the more effective interventions available.

The goal shifts from building capacity to preserving it. Strength training that once developed muscle now helps maintain what's there. Aerobic activity that once increased fitness now helps slow its decline. The activities are similar. What they're protecting against is different.

The through line

Activity guidelines across all three stages share something: the evidence consistently shows that more movement correlates with better outcomes, and that some activity is dramatically better than none, at every age.

The specific targets are useful reference points, not strict requirements. A 55-year-old who walks 30 minutes most days and does some light resistance work twice a week is doing something that matters, even if they're not hitting every number precisely.

What shifts across life stages isn't primarily what you should do. It's why you're doing it and what you're protecting.

This page is for education only and is not medical advice. If you have a medical condition or specific concerns, talk with a qualified healthcare professional.