I am convinced most ballplayers are using performance enhancing drugs.
It sucks cause every time somebody has a good year you have to consider this..its kind of ruined the game a bit for me.. I'd like it more if they made all that stuff legal and at least you knew everyone competed from the same place.
Lifting weights is performance enhancing.
Working out is performance enhancing.
Taking vitamins is performance enhancing.
Getting a good nights sleep is performance enhancing.
Batting practice is performance enhancing.
Unless a specific performance enhancement is otherwise illegal, they ought to be allowed to do whatever they damn well please (and are willing to assume the risk of) to their own bodies. It is absurd to make some arbitrary list of some performance enhancements that are allowed and some that are not.