For more than a decade, the headline number for heart-protective exercise has been 150 minutes of moderate activity per week. New research is challenging that ceiling, suggesting the sweet spot for cutting cardiovascular disease risk may sit closer to 560–610 minutes per week — roughly 80 to 90 minutes a day.
The finding does not overturn current public health guidelines, but it sharpens a point exercise scientists have made for years: the standard recommendation is a floor, not a ceiling. For people who can safely train more, the cardiovascular payoff appears to keep climbing well past the official minimum.
What the New Research Found
A large 2026 analysis examined weekly physical activity patterns and cardiovascular events across hundreds of thousands of adults. Compared with people who met the standard 150-minute weekly target, those accumulating between 560 and 610 minutes of moderate-to-vigorous activity per week showed a meaningfully lower risk of heart attack, stroke, and cardiovascular death.
Importantly, the dose-response curve did not flatten at 150 minutes. Risk continued to drop as weekly volume rose, with the steepest additional benefits appearing in the 300–600-minute range before plateauing. Above that window, more exercise still appeared safe for most participants but offered diminishing marginal returns on heart health.
The results echo earlier work from the Harvard T.H. Chan School of Public Health, which reported in 2022 that adults logging two to four times the recommended weekly activity had a 21–31% lower risk of all-cause mortality compared with those barely meeting the minimum.
How This Compares to Current Guidelines
The World Health Organization and the U.S. Department of Health and Human Services both recommend:
- 150–300 minutes of moderate-intensity aerobic activity per week, or
- 75–150 minutes of vigorous-intensity aerobic activity per week, or
- An equivalent combination of moderate and vigorous activity, plus
- Muscle-strengthening activity on two or more days per week
The newer evidence sits above the upper end of that range. WHO guidance already notes that benefits continue to accrue beyond 300 minutes per week — the new analysis quantifies how far the protective dose-response curve extends before leveling off.
Why More Movement Helps the Heart
The biological mechanisms linking exercise to cardiovascular protection are well established. Regular aerobic activity has been shown to:
- Lower resting blood pressure and improve arterial elasticity
- Reduce LDL cholesterol and raise HDL cholesterol
- Improve insulin sensitivity and glucose regulation
- Lower systemic inflammation, measured by markers such as C-reactive protein
- Increase cardiac output efficiency and resting heart rate variability
- Support healthy body composition and reduce visceral fat
Higher exercise volumes appear to compound these effects. According to research published in Circulation, vigorous activity in particular drives meaningful improvements in VO₂ max — a measure of cardiorespiratory fitness that is one of the strongest predictors of long-term survival.
Is More Always Better?
Not necessarily. Researchers have long debated whether extreme exercise volumes — ultramarathon training, for example — might carry small additional risks such as atrial fibrillation or coronary artery calcification. The 560–610-minute range identified in the new analysis falls well short of elite endurance loads and appears broadly safe in healthy adults.
For most people, the practical question is not whether to push past 600 weekly minutes, but how to move from sedentary or barely-active toward the well-supported middle of the dose-response curve. Studies consistently show the largest health gains occur when people who do almost nothing start doing something. The jump from zero to 150 minutes weekly is associated with the steepest single drop in mortality risk.
What Counts as Moderate or Vigorous Activity
Moderate-intensity activity raises the heart rate and breathing but still allows conversation. Examples include brisk walking, recreational cycling, doubles tennis, and gardening. Vigorous activity makes sustained conversation difficult and includes running, swimming laps, singles tennis, and uphill hiking.
Strength training, while not the primary focus of cardiovascular dose-response studies, is independently linked to lower cardiovascular mortality and helps preserve muscle mass and metabolic health with age.
Building Toward Higher Volumes Safely
For readers considering increasing weekly activity, evidence-based guidance suggests:
- Progress gradually. A common rule of thumb is to increase weekly training load by no more than 10% per week to reduce overuse injury risk.
- Mix intensities. Combining longer low-to-moderate sessions with shorter higher-intensity sessions appears to support both cardiovascular and metabolic adaptations.
- Include recovery. The American College of Sports Medicine recommends at least one to two lower-stress days per week, especially as volume climbs.
- Strength train twice weekly. Resistance work supports bone density, joint stability, and metabolic health alongside cardio.
- Check in with a clinician. Adults with established heart disease, uncontrolled hypertension, or other chronic conditions should consult a healthcare provider before substantially increasing exercise intensity or volume.
The Bigger Picture
The 150-minute guideline is a public health minimum designed to be achievable for the broadest possible population. It is not a target ceiling, and the latest research reinforces what cardiologists and exercise physiologists have argued for years: when it comes to heart disease prevention, more movement — up to a generous threshold — tends to mean lower risk.
That does not mean everyone needs to log 90 minutes a day. For sedentary adults, the most impactful step is simply to start. For active adults already meeting the minimum, the data suggest there is meaningful room to expand without crossing into territory where risks outweigh benefits.
As always, the best exercise plan is one that fits your body, your schedule, and any conditions you live with — ideally developed in partnership with a healthcare provider who knows your full medical history.
Disclosure: This content is for informational purposes only and is not medical advice. Always consult a qualified healthcare provider before making changes to your health regimen.