I was clearing three, sometimes even four Rockstars per day not too long ago. Just got to where they didn't even affect me much, and cracking open fresh ones throughout the day just made me feel alert and good. I got it back down to just one every morning around 5 or 6am, with maybe a second in the afternoon once per week -- usually on a Saturday or Sunday when running errands and trying to survive parenthood. I'm in my late-thirties now, and need to find an effective alternative, but coffee makes me feel poisoned.. almost like there's toxic metals coursing through my veins.

Tried pairing coffee with taurine to counteract the negative side-effects of the caffeine, but it doesn't work quite as well without whatever witch's brew they throw in with it in energy drinks.