Great product! I work out with alot of intensity- swimming, running and weightlifting. Heavy months 8 hours a week. I can say I noticed a huge difference if I took these before a workout and before bed. I also take a protein shake after workout and that includes my BCAA's so I don't usually take them immediately after my workout. Can only say they helped tremendously. Do not think anything psychosomatic was going on. And just to add I eat very healthy, am a lacto-ovo vegetarian and I get enough sleep and meditate and do yoga as well. So for what it's worth, I think they help. Ryan