yes absolutely!! L-glutamine is absolutely essential...and also if you are dealing with depression take some GAVA. I never noticed a huge boost in energy from the GAVA but *absolutely* as far as my mental health...no more crashes basically and really keeps me thinking straight and clear - I love it!
Also, I've been taking three softball capsules of CLA (NOW brand - not CLA Extreme because that has soy in it but just the regular CLA) before my workouts and that seriously gives me an energy boost at 5 in the morning!