I also agree with EER, if you first are in need of lifestyle changes, establish a routine, change your diet, start a solid exercise program. This itself is supposed to spark the body to start producing more testosterone on its own, unless of course there is something wrong, and the body wont do it. In many cases, a sure fire sign or symptoms is constant extreme fatigue for long periods of time, lack of sexual libido, among other things. Your doctor can determine if it is indeed low t, or a hidden, underlying cause. I hope this helps.