It Can Take Time…
After the first two months of an exercise program, volunteers who had insomnia reported they were not sleeping any better than they had at the start of the study. It wasn’t until the four month mark that their insomnia improved. They also rarely reported sleeping better on nights when they had exercised and they almost always exercised for a shorter amount of time on the days after a poor night’s sleep.
Journal of Clinical Sleep Medicine, November 2013