Other contributors have said "Does beating your meat make you tired?" is the same question as "Does masturbating make you tired?" If you believe that these are not asking the same thing and should be answered differently, click here
in greek mythology they used to say that they slept because the evil Greek gods would come and take them hostage, if they slept the gods would leave them
In my experience, Prozac "revs" me up a little, giving me a little more energy. I took 20 mg daily for low-grade depression, occasionally skipping a day.
Whilst heat doesn't nesscarily make you tired. movement creates heat energy. Your body will want to keep heat levels low, so you will natrually move less. =D