A Surprising Edge: How Women Gain More from Exercise

Disclaimer: Informational only—not medical advice. Talk with a clinician before changing your exercise plan, especially if you have a heart condition, joint issues, or other medical concerns.

A large U.S. cohort study published in the Journal of the American College of Cardiology (Ji et al., 2024) found that women appear to gain more longevity and heart-protection benefit per minute of leisure-time exercise than men. That does not mean men benefit less overall—or that women can skip workouts—but it does reframe motivation: the same walk, bike ride, or strength session may buy women an outsized return.

Below is what the evidence actually showed, how it fits current ACSM / Physical Activity Guidelines targets, and five practical reasons regular activity is especially worth prioritizing for women.

What the JACC study measured

Researchers followed 412,413 U.S. adults (about 55% women; mean age ~44) across nearly 5 million person-years of follow-up and compared self-reported leisure-time physical activity with all-cause and cardiovascular mortality. Regular activity versus inactivity was linked to about a 24% lower all-cause mortality risk in women versus about 15% in men. For cardiovascular death, the gap was wider—roughly 36% lower risk in women versus about 14% in men with regular aerobic activity. Sex differences were also seen for muscle-strengthening activity.

Dose mattered: men reached a near-maximal survival benefit around ~300 minutes/week of moderate-to-vigorous activity, while women reached a similar benefit near ~140 minutes/week and continued toward a maximum around ~300 minutes as well. In plain language: women often hit a meaningful “benefit plateau” sooner—but more movement still helps.

Finding (Ji et al., JACC 2024)	Women	Men
All-cause mortality with regular leisure activity vs inactivity	~24% lower risk	~15% lower risk
Cardiovascular mortality with regular aerobic activity	~36% lower risk	~14% lower risk
Minutes/week to approach men’s maximal survival benefit	~140 min MVPA	~300 min MVPA
Approx. minutes/week at maximal reported survival benefit	~300 min	~300 min

Newer accelerometer research (for example, wearable-based analyses of coronary heart disease risk) has found a similar pattern: equal moderate-to-vigorous minutes often associate with larger relative risk reductions in women. Guidelines from ACSM, CDC, and HHS remain sex-neutral for now—use them as the floor, not a ceiling.

Guideline floor: still 150 minutes + strength

For adults, ACSM and the Physical Activity Guidelines for Americans still recommend at least 150 minutes/week of moderate-intensity aerobic activity (or 75 minutes vigorous), plus muscle-strengthening work on 2+ days/week. If 150 minutes feels far away, start where you are: short bouts count, and the JACC data suggest women may see meaningful returns even before hitting the full target.

1. Cardiovascular health

Heart disease remains a leading cause of death for women. Aerobic training improves blood pressure, lipid profiles, cardiorespiratory fitness, and vascular function. The JACC mortality findings are the population-level signal: at comparable leisure-time doses, women showed larger relative reductions in cardiovascular death. Pair cardio you enjoy (brisk walking, cycling, swimming, dance) with progress you can measure—minutes per week, not perfection.

2. Mental well-being

Exercise is one of the most reliable non-drug tools for mood. Regular activity can reduce symptoms of depression and anxiety for many people, improve sleep quality, and blunt stress reactivity. Women experience higher rates of some mood and anxiety disorders across the lifespan; consistent movement will not replace therapy or medication when those are needed, but it is a high-yield daily lever—especially outdoor walking, group classes, or strength sessions that also build confidence.

3. Strength, muscle, and flexibility

Strength training does not automatically create a bulky physique. Progressive resistance builds lean mass, improves daily function, and supports metabolic health. Women, on average, have less absolute muscle mass than men, so preserving it with age is especially useful for independence and fall prevention. Add mobility work—hips, thoracic spine, ankles—so strength gains transfer to real life. Two to three full-body sessions weekly is enough for most beginners.

4. Bone health

Osteoporosis disproportionately affects women. Peak bone mass is typically lower than in men, and the drop in estrogen around menopause accelerates bone loss. Weight-bearing impact (walking, jogging if joints allow, stair climbing) and progressive resistance training stimulate bone remodeling. If you already have low bone density or fracture history, get a clinician-cleared plan—form and load matter more than “going hard.”

For a deeper dive on lifting for bone, see Aglena’s Resistance Training: A Bone’s BFF.

5. Weight management and metabolic health

Activity helps manage energy balance and body composition, but the metabolic payoff goes beyond the scale. Aerobic and resistance training improve insulin sensitivity and help lower the risk of type 2 diabetes. For many women, combining both modalities beats cardio alone for preserving muscle while managing fat mass. Track habits you control—weekly minutes and protein-rich meals—rather than only day-to-day weight.

A simple week that matches the evidence

• Most days: 20–30 minutes brisk walking or equivalent moderate cardio (build toward 150+ minutes/week).
• 2–3 days: Full-body strength (squat or sit-to-stand pattern, hinge, push, pull, carry).
• Optional: One harder interval or hill session if recovery and joints allow.
• Recovery: Sleep, protein, and at least one easier day—especially around illness or high stress.

Bottom line

Women are not “behind” men in how they respond to exercise—population data suggest they often get more mortality benefit from similar leisure-time doses. Use that as encouragement, not pressure. Meet the ACSM/guideline floor when you can, strength-train for muscle and bone, and choose activities you will repeat. Consistency beats hero workouts.