About Glutamine/"if you’re under stress (i.e., really busy, training hard, not sleeping well, sick, etc.), glutamine becomes essential, so adding more into your diet can be highly beneficial."Glutamine is naturally found in abundance in animal protein. Paleo diet staples like grass-fed beef, wild game, pastured eggs and poultry, wild fish, seafood, and organ meats are all phenomenal sources of glutamine. Leafy greens, such as spinach, cabbage, .."