Weighing in at an impressive 60% protein content, Spirulina is a fresh water alga–actually, a form of bacteria–which knocks both red meat, at 27%, and soy, at 34%, on the ropes in terms of muscle-building potential.Weighing in at an impressive 60% protein content, Spirulina is a fresh water alga–actually, a form of bacteria–which knocks both red meat, at 27%, and soy, at 34%, on the ropes in terms of muscle-building potential.
