The global standard is at least 150 minutes of moderate-intensity exercise per week. That works out to about 30 minutes a day, five days a week, though you can split it up however you like. If you prefer vigorous exercise like running or swimming laps, 75 minutes per week provides equivalent benefits. On top of that aerobic baseline, you need at least two days of muscle-strengthening activity.
What Counts as Moderate vs. Vigorous
The difference comes down to how hard your body is working. Moderate-intensity activities burn roughly three to six times the energy you use sitting still. Vigorous activities burn six times or more. The practical distinction: during moderate exercise you can talk but not sing, while vigorous exercise makes holding a conversation difficult.
Moderate-intensity activities include brisk walking (2.5 mph or faster), recreational swimming, doubles tennis, cycling under 10 mph on flat ground, active yoga styles like vinyasa, ballroom dancing, and general yard work. Vigorous-intensity activities include jogging or running, swimming laps, singles tennis, cycling over 10 mph, jumping rope, kickboxing classes, and heavy digging or shoveling.
You can mix and match. A general rule: one minute of vigorous activity replaces about two minutes of moderate activity. So 30 minutes of jogging plus 60 minutes of brisk walking in a week gets you to 90 equivalent “vigorous minutes,” which exceeds the 75-minute vigorous threshold.
Strength Training Adds Up Separately
The 150-minute target covers only aerobic exercise. Adults also need muscle-strengthening activities on two or more days per week, working all major muscle groups: legs, hips, back, core, chest, shoulders, and arms. This can mean weight lifting, resistance bands, bodyweight exercises like push-ups and squats, or heavy gardening. These sessions don’t need to be long. Two 20-to-30-minute sessions per week is enough for most people.
For children and teenagers aged 5 to 17, the strength recommendation is higher: activities that build muscle and bone at least three days per week, alongside 60 minutes of daily moderate-to-vigorous activity.
Extra Recommendations for Adults Over 65
Older adults follow the same 150-minute aerobic and two-day strength framework, with one addition: balance training. Activities like walking heel-to-toe, standing from a seated position, or tai chi help reduce fall risk. The CDC lists balance work as a distinct weekly requirement for this age group, not an optional extra.
If chronic conditions or mobility limitations make 150 minutes unrealistic, any amount of activity still helps. The guidance for older adults is explicit: some physical activity is better than none.
You Don’t Have to Spread It Evenly
A large study of nearly 90,000 adults published in Circulation found that “weekend warriors,” people who pack all 150-plus minutes into one or two days, get essentially the same health benefits as those who exercise throughout the week. Compared to inactive adults, weekend warriors had a 23% lower risk of hypertension, 43% lower risk of diabetes, and 45% lower risk of obesity. Those numbers were statistically indistinguishable from people who spread their exercise across the week.
The researchers’ conclusion was straightforward: total volume of physical activity matters more than how you distribute it. If your schedule only allows two long sessions on Saturday and Sunday, that’s fine.
Even Five Extra Minutes Makes a Difference
If 150 minutes feels out of reach, smaller amounts still reduce your risk of dying early. One study found that adding just five minutes of moderate-to-vigorous activity per day lowered all-cause mortality by 6% among the least active participants over an eight-year follow-up. When that five-minute addition was applied across the entire study population, the potential reduction in deaths rose to 10%.
This matters because the jump from zero to “some” exercise delivers the biggest relative benefit. Going from no activity to even 50 or 75 weekly minutes produces meaningful improvements in cardiovascular health, blood sugar regulation, and mood. The 150-minute target represents the point where benefits are well established, not a pass-fail threshold below which exercise is worthless.
If You Sit Most of the Day
Prolonged sitting carries its own risks independent of exercise. A meta-analysis cited by the Mayo Clinic found that people who sat more than eight hours a day with no physical activity had a mortality risk comparable to that of smoking or obesity. The amount of exercise needed to offset that risk was 60 to 75 minutes of moderate aerobic activity per day, well above the standard 30-minute guideline.
That doesn’t mean 150 minutes per week is useless if you have a desk job. It still lowers disease risk substantially. But if you regularly log eight or more sedentary hours, aiming closer to 300 minutes of moderate activity per week, or breaking up sitting with short movement breaks throughout the day, provides stronger protection.
Putting the Numbers Together
- Aerobic minimum: 150 minutes moderate or 75 minutes vigorous per week, or a combination
- Strength training: 2 or more days per week, all major muscle groups
- Balance training (age 65+): added to the weekly routine
- High sedentary time: aim for 60 to 75 minutes of moderate activity per day to counteract prolonged sitting
- Minimum effective dose: even 5 additional minutes per day reduces mortality risk if you’re currently inactive
The 150-minute number is a floor, not a ceiling. Health benefits continue to increase up to about 300 minutes of moderate activity per week, after which the additional gains flatten out. For most people, the practical goal is finding a sustainable routine that hits at least the baseline and includes some form of resistance work twice a week.