Well yesterday (6th day of cycle) I went to 600 mg/day of DNP,first 5 days were at 400 mg/day, with no real effects, at the most i was a little tired, but after going to 600 mg yesterday, i actually felt better ? I had a little more energy(than 400 mg), and actually had a pretty bad ass workout. Also noticed a little more sweating, well a lot more, I was drenched after only 3 sets.Other than the extra sweating , no other side effects. Going to stay with 600 mg today as well.