My personal Experiance is.......
Phen Free sucks compaired to ECA stack ,
i have tried both , when i switched to Phen Free my body fat went up about 8% in 2 months being on the same diet and using the same work out routine.
As for energy they both are loaded with caffine, i felt about the same , but your body tempeture doesnt seem to rise as much with phen free products so you dont burn as many calories compaired to using ephedra.
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