I tried the gym a lot. With BCAA Shots I have for my metabolic type (hardgainer) and my training goal (endurance) achieved with the shots exactly the right result.
The product is in my view appropriate for all who wish to support with BCAA's your training and are ready for a high quality to pay the appropriate price.
As the shots are to acquire in the price comparison, however, in another shop cheaper on Amazon, I forgive especially at this dealer "only" 4 stars.