Research
Energy balance
Physical activity reduces the risk of obesity by preventing weight gain and aiding in the maintenance of weight loss, with 45–60 minutes of moderate-intensity activity daily likely necessary for prevention.
To prevent obesity, aim for 45–60 minutes of moderate-intensity physical activity every day. If you are trying to lose weight, include regular physical activity in your program, as it is more effective at maintaining weight loss than diet alone.
GoodSupportsHIGH confidence
It is likely that for many people, 45–60 minutes of moderate-intensity physical activity a day is necessary to prevent obesity. Weight loss programmes that include a regular physical activity component are more effective at maintaining weight loss.
Why this rating
The paper states 'substantial evidence' and provides a specific time range for prevention.
Source
Physical activity and health
Lisa M Miles · Nutrition Bulletin · 2007
DOI 10.1111/j.1467-3010.2007.00668.x
narrative_reviewCited 302×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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