I lift weights but that does not make me tired. When I go to bed I just don't sleep. I don't feel sleepy either.
The only way I can make myself sleep is if I do High Intensity Interval Training. Simply speaking I need to sprint 30 seconds, walk 30 seconds, sprint 30 seconds, walk 30 seconds. I do that for 5 minutes and I am exhausted (which is normal). I go home and pass ...