The official recovery brand of champions! Faster recovery is the key to better results. For over 10 years, Xtend has been making the best recovery products in the world. Powered by essential amino acids, including branched-chain amino acids (BCAAs), Xtend EAA drives both muscle recovery and growth so you can achieve your goals today and prepare for tomorrow. When to take Xtend for best results: Intra workout, post workout, rest days. Combine with any Xtend branded product every day, even on rest days, to help maximize your recovery.