Flaxseed is not just a great protein source, but it provides essential fats.
These are critical to both muscle health and performance, such as increased joint recovery, and better fat loss during workouts.
Flaxseed is a great thing to add to a casein protein shake at bedtime.
The healthy fats are slower to digest, followed by the slowly digesting casein, increasing the amount of protein that the muscles have to work with overnight.