I've been taking ZMA for around 5 months now, and before you think this is one of those scam pills to "get results the next day try now!" your'e wrong. To get the full effect of ZMA you need to incorporate some from of weightlifting into your exercise routine. Not just swinging a kettlebell around and call it a day. I mean do some deadlifts, squats or dumbell rows. Get your muscles working to their fullest. Then after your workout before you go to bed take 2 tablets, plus they help you fall asleep and stay asleep longer, which is important for mucles growth! And these pills aid in muscle recovery so you don't feel so sore afterwards. A must buy if your'e serious about getting stronger or building definition.