Exercise
Exercise evidence covers how different training approaches, intensities, and volumes affect cardiovascular health, metabolic markers, and longevity. This hub links to evidence records that compare study designs directly rather than repeating fitness-industry claims.
2 evidence records in this topic
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How much strength training do adults need?
U.S. Department of Health and Human Services · 2018
Federal guidelines recommend muscle-strengthening activity for all major muscle groups at least 2 days each week. You do not need a bodybuilding routine for it to count. Weights, resistance bands, body-weight exercises, carrying heavy loads, and heavy gardening can all qualify when they make the muscles work harder than usual.
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Is high-intensity interval training (HIIT) better than moderate-intensity continuous training for cardiovascular health?
British Journal of Sports Medicine · 2014
In people with existing cardiometabolic disease, HIIT produces a larger improvement in cardiorespiratory fitness (VO2peak) than moderate-intensity continuous training (MICT) of similar time commitment, with a comparable safety profile in supervised settings. For the general population without existing disease, evidence suggests both approaches meaningfully improve cardiovascular health, and consistency matters more than which one is chosen.