Robbe De Ryck CyclingHouwaart5/510-03-2023Super! Everything on time and as agreed and good material! After coming out I really felt the effect until 3 days later when the expected "relapse" came. This lasted 7 days for me. After that it was gone and the legs are great! Your recovery runs faster and you can keep pushing longer or more power even in acidification. Personally, I really do notice the effect!