On television, they say that you shouldn't exercise before you go to bed. Why? Isn't it better to exercise even late than not at all? Sometimes that is the only time I can find to ride my stationary bike.
Vigorous exercise stimulates the production of energizing hormones that can interfere with falling and staying asleep; however, not everyone feels those effects, and so if exercise doesn’t stop you from sleeping, then go for it because exercise is essential. If you do get revved up, take a warm bath, preferably scented with a few drops of lavender. A bath and lavender are natural relaxants.