Am a massive fan of natural based products. This product is outstanding! I can speak from 5+ years experience trying it in different training scenarios. My cycling performance has elevated during a race, hard interval session and afterwards from a recovery perspective aswell. In terms of real data, its translated into a 5-8% increase in power and around 5-10bpm lower HR coupled with the ability to ride harder for longer before feeling significant fatigue. When competing in multi day racing or hard intensity interval blocks I also take it afterwards and have noticed my recovery is so much faster. Supplement timing is crucial to see maximise gains.