I took xanax for a long time & my experience with it is that regardless of your size, it's going to make you tired almost every time you take it until your body's used to it. The problem is, that also means you're addicted to it at that point. I used to take it once per day to enhance my opies & never thought much of it til I stopped! Do yourself a favor & ONLY take it whem you need it. Recreational use just puts you to sleep, but when u CAN use it recreationally it's already too late because that means you're addicted! Don't let yourself get addicted to ie, please! Benzo's like xanax are a BITCH to get off of,.i know! I quit for about a month & I just take it once every week or 2 if I need it!