I just wanted to make some people aware that Beta Alanine is a worth while shot to try. It really makes a difference in the fatigue factor after about 2 weeks. It also helps build muscle.

About the best price I've found is at nutrabio.com I was on it before and I'm on it again. I take it with L-histidine because beta alanine and histidine converts to Carnosine in the body, which is what you want when trying to build muscle. You can stack it with creatine for an even more synergistic, muscle building effect in addition to being able to enable you to workout harder and get in a few more reps before failure and burning sets in. It works well on your stamina also when doing Insanity.

It doesn't cost a lot, but it's worth the money.