| Weekly moderate aerobic activity target | 150–300 minutes (U.S. Department of Health and Human Services Physical Activity Guidelines for Americans, 2nd Edition) |
| Weekly vigorous aerobic activity target | 75–150 minutes (U.S. Department of Health and Human Services Physical Activity Guidelines for Americans, 2nd Edition) |
| Muscle-strengthening sessions per week | 2 or more days (U.S. Department of Health and Human Services Physical Activity Guidelines for Americans, 2nd Edition) |
| Minimum activity shown to provide health benefits | As little as 10 minutes at a time (Physical Activity Guidelines for Americans, 2nd Edition) |
| Adults meeting aerobic guidelines (U.S.) | ~53% (CDC National Health Interview Survey data) |
| Adults meeting both aerobic and strength guidelines | ~24% (CDC National Health Interview Survey data) |
The Core Recommendations at a Glance
The Physical Activity Guidelines for Americans, published by the U.S. Department of Health and Human Services, set the national benchmark for adult exercise. The guidelines are grounded in a review of thousands of scientific studies and are widely used by healthcare providers, public health agencies, and fitness professionals.
| Weekly moderate aerobic activity target | 150–300 minutes (U.S. Department of Health and Human Services Physical Activity Guidelines for Americans, 2nd Edition) |
| Weekly vigorous aerobic activity target | 75–150 minutes (U.S. Department of Health and Human Services Physical Activity Guidelines for Americans, 2nd Edition) |
| Muscle-strengthening sessions per week | 2 or more days (U.S. Department of Health and Human Services Physical Activity Guidelines for Americans, 2nd Edition) |
| Minimum activity shown to provide health benefits | As little as 10 minutes at a time (Physical Activity Guidelines for Americans, 2nd Edition) |
| Adults meeting aerobic guidelines (U.S.) | ~53% (CDC National Health Interview Survey data) |
| Adults meeting both aerobic and strength guidelines | ~24% (CDC National Health Interview Survey data) |
Two primary categories of activity form the foundation of the recommendations: aerobic (cardiovascular) activity and muscle-strengthening activity. Adults are advised to engage in both each week, not just one or the other. These targets apply to generally healthy adults aged 18–64; older adults follow similar guidance with added emphasis on balance and fall prevention.
One of the most important updates in the current guidelines is that any movement counts. Short bouts of activity spread throughout the day — climbing stairs, a brisk 10-minute walk during lunch, active household chores — all contribute toward weekly totals. The previous threshold requiring sessions of at least 10 continuous minutes was removed based on evidence that accumulated activity produces comparable benefits.
Aerobic Activity: Moderate vs. Vigorous
Aerobic activity is movement that raises your heart rate and makes you breathe harder. The guidelines frame targets in terms of two intensity levels that can be combined in any proportion.
- Moderate intensity: 150–300 minutes per week. At this level, you can talk but not sing comfortably — brisk walking, water aerobics, and casual cycling are common examples. See what moderate-intensity exercise actually means for a deeper look at how to gauge this level accurately.
- Vigorous intensity: 75–150 minutes per week. Breathing is rapid and conversation is difficult — jogging, swimming laps, or singles tennis typically qualify.
- Mixed approach: Any equivalent combination of moderate and vigorous activity also meets the guideline. For example, 100 minutes of moderate activity plus 25 minutes of vigorous activity in a week is considered equivalent.
Greater health benefits — including reduced risk of certain chronic diseases — are generally associated with activity beyond the minimum targets, up to a point. The guidelines note that additional benefit continues to accumulate above the 300-minute moderate threshold, though returns gradually diminish.
This Is General Health Information
The guidance here reflects publicly established public health recommendations for generally healthy adults. It is not personalized medical advice. If you have a chronic condition, recent injury, or are new to exercise after a prolonged period of inactivity, consult a qualified healthcare professional before beginning or significantly changing a physical activity routine.
Muscle-Strengthening and Sedentary Behavior
Beyond aerobic activity, the guidelines call for muscle-strengthening activities on 2 or more days per week. These should work all major muscle groups: legs, hips, back, abdomen, chest, shoulders, and arms. Examples include resistance training with weights or bands, bodyweight exercises like push-ups and squats, heavy gardening, and certain yoga styles.
Importantly, strengthening sessions do not need to happen in a gym. Everyday and recreational movement can meet both aerobic and strengthening criteria depending on the activity and how it is performed.
On Sedentary Behavior
The guidelines acknowledge that most American adults spend significant portions of the day sitting. While the evidence is still developing, the current position is that adults should move more and sit less. Replacing even small amounts of sedentary time with light-intensity activity is associated with health benefits, particularly for those who are otherwise very inactive.
No specific daily sitting limit is prescribed in the federal guidelines, but reducing prolonged uninterrupted sitting — for example, by standing or walking briefly every hour — is broadly supported as a practical strategy.
Getting Started
If you have been inactive for an extended period, beginning gradually is appropriate. Starting a walking routine after years of sedentary living is one practical entry point backed by the guidelines' emphasis on incremental progress over abrupt change.
This article provides general health information based on publicly established guidelines and is not a substitute for personalized medical advice. Consult a qualified healthcare professional before starting a new exercise program, especially if you have existing health conditions.