I read about Pogacar sour cherry drink, which he drank last season after the TDF. That's why I'm also trying to grow chokeberry, which is the most similar to it. According to my findings, it should work exactly like you write about cocoa. I found out about these things because I often exercise in the evening due to work and after intensive training I have a problem with high stress and poor sleep. I tried chokeberry here, but I can't say that I had clear results yet. What I read is that it helps reduce inflammation in the muscles - but on the other hand, that inflammation is necessary for adaptation.