I've been having trouble sleeping at night. My doctor advised me to get more exercise. Does that just tire me out more so I sleep better?

Studies show that physical inactivity is linked to insomnia. Researchers think a lack of exercise prevents the normal ups and downs of body temperature. Regular exercise makes the body temperature rise and then fall (during cool down). Decreased body temperature brings on sleep and helps put us into a deep sleep. New studies are trying to find the best time to exercise. There may be some gender differences. Women seem to do best with early morning exercise. Men respond better to exercise in the late afternoon or early evening. Either way, the key to better sleep is regular exercise.

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