liftvault.com › nutrition › best-essential-aminoThe 8 Best EAA Supplements for 2022 (Tested) - Lift Vault Mar 30, 2022 · EAAs are absorbed rapidly by the body. This makes them a good choice for intra workout supplementation. Whey protein requires digestion. In short, both are excellent supplements for building muscle. Personally, I would take EAA either right before or while I workout and then drink a protein shake afterward.