I ordered cissus powder (5% ketosterois) to help with the tendinitis in my knee. I've been taking two grams in the morning and two in the evening. I noticed it makes me really relaxed, especially after my dose at night. I was wondering why is this. It sort of gets me very relaxed to where I feel good but I'm also some what tired and a little lazy. I hear cissus can lower cortisol. Could this be why it makes me feel tired? Also how does cortisol effect bodybuilding.