I was wondering, does it matter what time of the day I workout ? Every day I wake up around 8 or 9 AM, I usually start my workout late at night starting at 11 PM for about an hour until midnight and after that I go to bed. Lately I've been experiencing some sleeping problems but I don't know if it's connected with the workout. Is there a time of the day when it's optimal and best to have a workout, does it make a difference what time of day the workout is done? . Also, should I workout before or after having a meal. I workout mostly my abs , chest and biceps if it's of any importance? tnx a lot