A study on 2600 people between the ages of 18-85 showed that if they exercise hard for at least 150 minutes a week that they sleep better and feel more alert during the daytime. The quality of their sleep is 65% better. Insomnia affects us all at some time in our life, but at any one time about 40% of Americans have difficulty sleeping. Other benefits arising from exercise are 68% fewer leg cramps and 45% less difficulty in concentrating.
