I currently train Muay Thai about twice a week and I'm considering doing BJJ. I did kickboxing for a number of years and have a small experience in Kung Fu and Krav Maga. So I've mainly experience in striking. I'd like to take up BJJ to improve my grappling and become much more well rounded as a fighter. I had a small bit of experience with MMA at another club and I found it to be a tougher workout as you end up using your whole body. Could this type of training be good for weight loss and muscle build up?