Understanding the Physical Activity Guidelines Most Americans Don't Know About
Federal physical activity guidelines exist for adults, older adults, and kids—but most people have never read them. Here's a plain-language breakdown.
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What the Guidelines Actually Say
The U.S. Department of Health and Human Services publishes the Physical Activity Guidelines for Americans, a federally issued evidence-based framework updated most recently in 2018. Despite being a free, publicly available document, surveys consistently show that most adults are unaware of its specific targets.
| Adult aerobic goal (moderate intensity) | 150–300 minutes per week (Physical Activity Guidelines for Americans, 2nd Edition (HHS, 2018)) |
| Adult aerobic goal (vigorous intensity) | 75–150 minutes per week (Physical Activity Guidelines for Americans, 2nd Edition (HHS, 2018)) |
| Muscle-strengthening frequency | 2 or more days per week (Physical Activity Guidelines for Americans, 2nd Edition (HHS, 2018)) |
| Children's daily activity target (ages 6–17) | 60 minutes of moderate-to-vigorous activity (Physical Activity Guidelines for Americans, 2nd Edition (HHS, 2018)) |
| Adults meeting both aerobic & strengthening guidelines | Approximately 1 in 4 (Centers for Disease Control and Prevention (CDC)) |
| Cost of following the guidelines | Free — no equipment or gym required |
For adults ages 18–64, the guidelines recommend at least 150–300 minutes of moderate-intensity aerobic activity per week — or 75–150 minutes of vigorous-intensity activity — along with muscle-strengthening activities on two or more days per week. These can be spread across the week in any pattern; you don't need long, continuous sessions. Even bouts as short as 10 minutes count toward your total.
A key update in the 2018 edition: some movement is better than none. The previous version implied a minimum threshold; the current guidelines emphasize that any amount of physical activity provides some health benefit, removing a barrier that stopped many sedentary individuals from starting at all.
Guidelines by Population Group
The guidelines are not one-size-fits-all. Different populations have distinct recommendations:
- Children and adolescents (6–17): At least 60 minutes of moderate-to-vigorous activity daily, including aerobic, muscle-strengthening, and bone-strengthening activities on at least three days per week.
- Young children (3–5): Active throughout the day — no specific minute target, but guided play is encouraged.
- Older adults (65+): Same aerobic and muscle-strengthening targets as younger adults, plus activities that improve balance to reduce fall risk.
- Pregnant and postpartum individuals: At least 150 minutes of moderate-intensity activity per week is generally considered safe, but this group should always consult a healthcare provider before starting or changing an exercise routine.
- Adults with chronic conditions or disabilities: Should work with a healthcare professional to adapt the guidelines to their specific circumstances.
Moderate-intensity activity
Physical movement that noticeably raises your heart rate and breathing, but still allows you to hold a conversation. Brisk walking, water aerobics, and casual cycling are common examples.
Vigorous-intensity activity
Exercise that significantly increases heart rate and breathing, making it difficult to say more than a few words at a time. Running, swimming laps, and aerobics classes typically qualify.
Muscle-strengthening activity
Activities that work the major muscle groups — including legs, hips, back, abdomen, chest, shoulders, and arms. Examples include bodyweight exercises, resistance bands, and heavy gardening.
NEAT (Non-Exercise Activity Thermogenesis)
The energy expended through everyday movement that is not formal exercise — such as walking, standing, housework, or fidgeting. NEAT contributes meaningfully to overall physical activity levels.
Aerobic activity
Rhythmic, continuous movement that engages large muscle groups and elevates heart and breathing rates over a sustained period, supporting cardiovascular health.
Many people assume guidelines require a gym or equipment. They don't. Brisk walking, dancing, gardening, and cycling all qualify as moderate-intensity activities. See how everyday movement counts for practical examples beyond structured workouts.
Why So Few Americans Meet the Guidelines
According to the Centers for Disease Control and Prevention (CDC), only about 1 in 4 U.S. adults meet both the aerobic and muscle-strengthening components of the guidelines. The gap is even wider for certain populations, including lower-income adults and those with sedentary jobs.
~25%
U.S. adults meeting aerobic & strengthening guidelines
According to CDC data, only about one in four American adults meet both components of the federal physical activity guidelines.
150 min
Minimum weekly moderate aerobic activity recommended
The 2018 Physical Activity Guidelines for Americans set this as the lower end of the target range for adults to gain substantial health benefits.
Any amount
Activity threshold for some health benefit
The 2018 guidelines clarified that even small amounts of movement provide benefit — removing the previous implication that short bouts 'don't count.'
Common barriers include time constraints, cost concerns, and persistent misconceptions about what "counts" as exercise. If you've heard that you need to push through pain or exercise for long stretches to benefit, those are myths worth unpacking. Fitness myths that discourage movement are well-documented and often stop people before they begin.
Cost is a real concern for many Americans, but the guidelines themselves don't require any equipment or facility. Free and low-cost resources — including government health portals and public library programs — can help you build a routine. Explore free fitness resources available online for credible starting points.
This article provides general health information and education only, not personalized medical advice. If you have an existing health condition or haven't been active in some time, consult a qualified healthcare professional before significantly increasing your physical activity level.
Health Editorial Team
Health Editorial Team is the collective byline for our editorial team and contributor network. Articles published under this byline or an editorial pen name are researched, written, and reviewed according to our editorial standards for clarity, consistency, and independence before publication.
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