If u could get the ones with ephedra in it then yes, otherwise they r shyt..
I know while on my super low cutting cycle this summer i took something called Tetracol with ephedra and it helped alot cause it gave me that extra bit of energy i needed to work out like i wanted to....
ephredrine can be found at most local gas stations, pick up a bottle, along with some no doz, or vivarin, and a generic bottle of aspiran, take as follows....