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What type of exercise is best? Variety according to this:
Research analyzing over 30 years of data from the Nurses’ Health Study and the Health Professionals Follow-Up Study found that higher overall physical activity is associated with lower mortality, but benefits level off after about 20 MET-hours/week, suggesting an optimal range rather than “more is always better.” Variety independently mattered: people doing a wider range of activities had substantially lower risks of death (about 19% lower all-cause mortality and 13–41% lower cause-specific mortality) even after accounting for total activity. Walking, stair-climbing, racquet sports, rowing/callisthenics, resistance training, and running showed notable mortality reductions. Findings are limited by observational design, self-reported activity, MET-estimation assumptions, and a mostly White sample, so causality and broad generalizability are uncertain. (Paraphrase. Read more: https://www.sciencedaily.com/releases/2026/04/260426012305.htm)
MET-hours quantify physical activity by combining intensity and duration. One MET (metabolic equivalent) equals the energy cost of sitting quietly (~1 kcal/kg/hour). An activity’s MET value (e.g., walking = ~3.0 METs, running = ~10.0 METs) is multiplied by hours spent doing it to give MET-hours. Example: 2 hours of a 4 MET activity = 8 MET-hours. MET-hours let researchers compare total weekly activity across different types and intensities.
What type of exercise is best? Variety according to this:
Research analyzing over 30 years of data from the Nurses’ Health Study and the Health Professionals Follow-Up Study found that higher overall physical activity is associated with lower mortality, but benefits level off after about 20 MET-hours/week, suggesting an optimal range rather than “more is always better.” Variety independently mattered: people doing a wider range of activities had substantially lower risks of death (about 19% lower all-cause mortality and 13–41% lower cause-specific mortality) even after accounting for total activity. Walking, stair-climbing, racquet sports, rowing/callisthenics, resistance training, and running showed notable mortality reductions. Findings are limited by observational design, self-reported activity, MET-estimation assumptions, and a mostly White sample, so causality and broad generalizability are uncertain. (Paraphrase. Read more: https://www.sciencedaily.com/releases/2026/04/260426012305.htm)
MET-hours quantify physical activity by combining intensity and duration. One MET (metabolic equivalent) equals the energy cost of sitting quietly (~1 kcal/kg/hour). An activity’s MET value (e.g., walking = ~3.0 METs, running = ~10.0 METs) is multiplied by hours spent doing it to give MET-hours. Example: 2 hours of a 4 MET activity = 8 MET-hours. MET-hours let researchers compare total weekly activity across different types and intensities.