I purchased these during my hockey season in hopes of them aiding in recovery. Having 5-6 skates a week began to take a toll and it was tough to get proper recovery in with the little amount of rest days we had. These definitely delivered and helped tremendously. They allowed me to skate just as hard during the last skate of the week as I did the first. The amino acids that they deliver provide the muscle cells to recover faster, allowing for less fatigue in between workouts.
The only downside that I can think of for these is that shortly after taking these you get a full body, tingly sensation. If you take these often it eventually lessens but I do know of a few people who found it uncomfortable at first. Overall, I highly recommend these for any athlete that feels they aren’t able to get a good amount of rest.