the new craze is nootropics, drugs that increase mental alertness ,hand eye
alos increasing physical performance due to increase mental performance.
over 50 nootropics are avail on a few are on the banned list .
clen is just a crude stimulant used for things such as swimming the side effects are not productive, clen can make people iritated,shakey,have anxiety and muscle fatigue faster during endurance and high demand sports due to its effects of drianing the body of electrolites and vitamins cuasing cramping and even a lack of reaction time and overall performance