I bought the product due to regeneration (11 trainings per week) I use it every day, so far in the evening 2 hours before bedtime. As I have more products for regeneration, I do not know how to evaluate this specifically, but I feel much better regeneration. Sometimes I get used to drinking it during training, but I don't feel the difference there, I rather feel "fullness" when I use it during training, so I prefer to stop it during training.