To be honest I was skeptical To be honest I was skeptical, I've tried enough products to know they generally do not do what they say. If they they do help performance, there is something that makes them unpleasant, like caffine, flushed skin, tingling etc. But, after a nine mile run for distance and the next day an 5 mile run with hills, the product did exactly what it claimed - no quit. I ran with pleasure - not missing the normal low gut feeling of not wanting to keep running. I will be using these products this year for two Spartan Trifectas.

Packaging Problem.. This service and product are both exceptional. I received my order so quickly I was surprised. The only complaint I have is that one entire box of drinks had gotten damaged and leaked out before it got to me. So, to me, that depreciated the value a bit. Paying that kind of money as a consumer I would expect to get my moneys worth. It may not hurt to look at better packaging, especially for fragile product. However, it was a simple accident and as they say, "things happen!" Excellent product. Excellent service.

Game Changing Kill Cliff has made a huge change in the level of training I am able to accomplish with my Jiu Jitsu and SOFLETE workouts. When protein, BCAA’s, and mobility workouts aren’t enough for recovery which is more often than not I supplement my diet with Kill Cliffs. I’ve had every flavor of recovery and love them all! Not to mention that it also helps my wife with her arthritis!

Tastes great - highly recommend! Tastes great - I love the Berry Punch & it does give me the extra endurance for my workouts, I’ve tried a variety of brands, found this brand through Tough Mudder. No jitteriness. Also being a Navy mom - I’m a huge fan of the concept it was created by a Navy Seal.

Poor experience from beginning to... Well I still haven't gotten my order! I have placed an order more than 2 weeks ago and I have yet to receive it. I both called and emailed the company but have yet to receive a response. No one is answering the phone at the company either. Option 4 on the automated system didn't even work! I'm a returning customer and I'm reminded of why I left on the first place.