I agree, G-Fuel is the shizzyeah i didnt go to the doc cause i didnt wanna take anything. save my liver for supplements! hahaha it was either a sever sinus infection or strep. anyways, at the tail end of it. did back yesterday and chest today. didnt have the energy to do both in one day. i was a little bit weaker but thats okay, im sick! just wanted to get some work in. i seriously love. no crash at all. it isnt a strong stim, but it wakes you up. all week i have felt like i wanted to sleep all day, and thats after a 10-12 hour night of sleep. take 1 packet of G Fuel and it gives me enough energy to get out of bed and lift.