:peeright: Enhance performance !!! :D
But seriously it depends on the fighter, different types of ped do different things as well. Some can make you more dynamic and explosive, which can mean harder punches, and like you mentioned, some give you more endurance fight day.
khan will probably use his speed to get the first few rounds, after that, Floyd will adjust and put a clinic on him... Khan gonna get his ass whooped.:buttkick: