Best preworkout out there. There should be no hesitation to buy this product. It doesn't mess around.

Never disappointing, this pre-workout is like a wide receiver that's been selected for the pro bowl a couple times. Clean, sustained energy that keeps you pushing through those last reps. Just beware of over consumption because there is a strong possibly that you might try to fight a lion just to finally tire yourself out.

I have taken many pre-workout supplements. This is bar far one of the most potent, even at half strength ( I always take half strength when trying new supps) .I love the feel and the energy burst. No crashing or jitters. I Defintely would buy this....

Big fan of Mr Hyde! I have already used this product before receiving this sample but wanted to write a review because this product is awesome!

This has been one of the BEST pre-workout supplements I have tried. The energy and intensity that it gives you made me feel like I was going on a Hulk Smash rampage. Kept my intensity levels up helping me power through my high rep workout and cardio. Would recommend to anyone who wants that extra boost in their workout.

I feel odd reviewing this multiple times - they gave me about 6 packs of this stuff. This is my second time trying it - the focus, the feeling of being able to lift it even when ordinarily you'd struggle - that's present. But, today - and yesterday - after having a single serving, it feels like I've taken that skin flushing Niacin when the workout is over. Even after a shower. Yesterday, it lasted until about 11 am (I took it at 6am). I like it - but the skin flushing (even though my skin isn't flushing, it just feels like it) is unpleasant.

This left me a little too jittery during my workout. Almost enough to take away from my lifting technique.

I used this sample product once and haven't done so again. Though I remember the product working (increased energy, pump, etc.), I felt panicked and tachycardic for a couple hours after my gym session - worried for no reason, out-of-breath, etc.. I'm not prone to that sort of thing, so it freaked me out.