The standard recommendation is 150 minutes of moderate-intensity cardio per week, or 75 minutes of vigorous-intensity cardio. You can also mix the two. These guidelines, from both the CDC and WHO, apply to all adults, including those over 65. But depending on your goals, you may benefit from doing more, and even small amounts below these targets still make a meaningful difference.
The Baseline: 150 or 75 Minutes
The simplest way to hit the 150-minute target is 30 minutes of moderate-intensity activity five days a week. Brisk walking counts. So does cycling at a casual pace, swimming laps at a comfortable speed, or mowing the lawn. If you prefer something harder, 75 minutes of vigorous activity (like running, fast cycling, or a high-intensity fitness class) provides equivalent benefits. You can spread that across as few as two or three sessions.
Mixing intensities works too. A rough conversion: one minute of vigorous activity equals about two minutes of moderate activity. So 30 minutes of jogging plus 60 minutes of brisk walking in the same week gets you there.
How Intensity Is Defined
Moderate intensity means your heart rate is up and you’re breathing harder, but you can still carry on a conversation. Think brisk walking, easy cycling, or water aerobics. In technical terms, these activities burn 3 to 5.9 times the energy your body uses while sitting still.
Vigorous intensity pushes you harder. You can only say a few words before needing to catch your breath. Running, lap swimming at speed, jump rope, and uphill hiking all qualify. These activities burn at least 6 times your resting energy expenditure. The simplest test: if you can’t comfortably talk, it’s vigorous.
More Minutes, More Benefits
The 150-minute target is a floor, not a ceiling. Doubling it to 300 minutes of moderate activity per week (or 150 minutes of vigorous activity) provides additional, measurable health benefits, including better support for weight loss and weight maintenance.
A large prospective study published in Circulation tracked the long-term effects across different activity levels. People who did 150 to 299 minutes per week of moderate activity had 20 to 21% lower all-cause mortality compared to inactive adults. Those who doubled up to 300 to 599 minutes per week saw 26 to 31% lower mortality. For vigorous activity, meeting the 75 to 149 minute guideline was associated with 19% lower all-cause mortality and 31% lower cardiovascular mortality. Going higher, to 150 to 299 minutes of vigorous activity weekly, pushed all-cause mortality reductions to 21 to 23%.
The takeaway: benefits keep climbing as you add more minutes, though the gains get smaller with each additional hour. There’s no sharp cutoff where exercise becomes harmful, but the biggest jump happens when you go from doing nothing to meeting the baseline recommendation.
Even 15 Minutes a Week Helps
If 150 minutes feels out of reach right now, much smaller amounts of vigorous exercise still move the needle. A study following participants over seven years found that just 15 minutes per week of vigorous activity was linked to an 18% lower risk of dying during the study period. Nineteen minutes per week was associated with a 40% lower risk of developing heart disease, and 16 minutes per week with a 16% drop in cancer risk.
These benefits showed up even when the activity came in short bursts of about two minutes scattered throughout the day rather than one continuous session. Taking the stairs, walking quickly to catch a bus, or doing a few minutes of bodyweight exercises all count when they push your heart rate into that vigorous zone. The message is clear: some cardio is dramatically better than none, and you don’t need a gym membership to get started.
Weekly Targets for Weight Loss
If your primary goal is losing weight or keeping it off, the general recommendation shifts upward to 300 minutes of moderate cardio per week, or 150 minutes of vigorous cardio. That’s roughly 40 to 45 minutes of moderate activity daily, or 30 minutes of vigorous activity five days a week. The Mayo Clinic frames this as the threshold where exercise begins to meaningfully contribute to weight management on its own, though diet still plays a major role in any weight loss equation.
At 150 minutes per week, most people will see improvements in blood pressure, blood sugar regulation, mood, and sleep. But the calorie burn at that level typically isn’t enough to produce significant fat loss without dietary changes. Pushing toward 300 minutes creates a larger energy deficit and makes it easier to sustain weight loss over time.
Guidelines for Adults Over 65
The weekly minute targets for older adults are identical: 150 minutes of moderate-intensity or 75 minutes of vigorous-intensity aerobic activity. The CDC adds two important extras for this age group. At least two days per week should include activities that strengthen muscles (resistance bands, light weights, bodyweight exercises). Balance-improving activities like tai chi or single-leg stands are also recommended to reduce fall risk.
For older adults with chronic conditions or mobility limitations, the guideline is straightforward: be as active as your abilities allow. Even falling short of 150 minutes provides real protective benefits compared to being sedentary. Walking remains one of the most accessible and well-studied forms of cardio for this group, and it can be broken into 10-minute bouts if longer sessions feel difficult.
How to Structure Your Week
There’s no single correct schedule. The guidelines don’t require daily exercise or any particular session length. Here are a few practical ways to hit 150 minutes of moderate cardio:
- 5 days, 30 minutes each: The classic split. A 30-minute brisk walk on weekday mornings or lunch breaks.
- 3 days, 50 minutes each: Longer sessions with more rest days. Good for people who prefer fewer but more substantial workouts.
- 6 days, 25 minutes each: Short daily sessions that build a habit without feeling overwhelming.
For 75 minutes of vigorous cardio, two or three sessions per week is typical. A 25-minute run three times a week covers it. You can also alternate longer moderate sessions with shorter vigorous ones depending on how you feel that day.
Spreading activity across the week rather than cramming it into one or two days appears to produce better cardiovascular outcomes. But “weekend warrior” patterns, where you get most of your activity on Saturday and Sunday, still provide significant benefits over inactivity. Consistency over months and years matters more than any single week’s schedule.