Physical Activity Guidelines
The 150-minute moderate-activity standard plus twice-weekly strength — the baseline trials assume and doctors prescribe.
The consensus adult prescription: at least 150 minutes of moderate aerobic activity weekly (or 75 vigorous), plus muscle-strengthening work twice weekly — the backdrop assumed by every major weight trial's "alongside increased physical activity" clause. Moderate means conversation-pace effort; brisk walking qualifies fully.
Framing matters more than the number: activity's weight-loss contribution is modest (appetite compensates), but its role in maintenance, cardiovascular risk, insulin sensitivity, mood, and muscle preservation is outsized — exercise is maintenance medicine that happens to burn calories. Split however it fits (five 30-minute walks, three gym sessions plus commute walking); the guideline is a floor to build toward, not an entry requirement for starting treatment.
This glossary entry is general information, not medical advice, and is written to be consistent with FDA prescribing information and primary trial publications as of its last review. Always consult a licensed healthcare provider for personal medical decisions.
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