Physical fitness is an important element of general health, and even tiny quantities of exercise can have a big impact. The government physical activity standards for 2018 propose 150 to 300 minutes of moderate physical activity per week or 75 minutes of strenuous physical activity per week. However, evidence indicates that exercise benefits may be obtained at lower doses. Most people can attain optimal health benefits with just 40 to 60 minutes of physical exercise each week. Exercise and enhanced cardiorespiratory fitness provide various physiological advantages, including lower blood pressure and inflammation, better insulin sensitivity and endothelial function, and decreased myocardial oxygen demand. Exercise is also linked to a lower incidence of hypertension, metabolic syndrome, type 2 diabetes, dementia, and Alzheimer’s disease.

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