Exercise And Sleep

Physical activity can help you sleep better. After your body has worked hard, deep sleep is triggered to help your body recover, repair, and get ready for more activity. This natural drive helps you fall asleep and sleep more restfully.

Be active outdoors, when possible. Outdoor physical activity increases exposure to sunlight. This helps to strengthen your body’s circadian rhythm (natural sleep clock). A stronger circadian rhythm helps you feel sleepy when it’s time to rest.

Sleep Helps You Recover from Exercise

Physical activity triggers a cycle of muscle break-down and repair. The repair process depends on sleep. Without enough sleep, repair is limited. This can increase the risk of injury and limit athletic goals (e.g., running or walking farther or lifting more weight).

Severe sleep restriction (less than four hours per night) can cause dramatic increases in your heart rate and blood pressure. This strains your heart. Not only does this limit your ability to exercise, but your risk for heart attack and cardiovascular problems increases.

Timing Exercise with Sleep

Physical activity increases adrenaline in the body. This hormone increases your heart rate and alertness. Plan vigorous exercise at least four to six hours before bedtime. Light exercise and mild activities should end at least two to four hours before bedtime.