Than you for the comment :) there are actually proteins in every plant based food you eat, very good sources of protein would be beans or lentils, plants also have antioxidants, witch combat inflammation and are good for recovering after training. meat also has muscle deteriorating properties in older adults, plus it raises IGF-1, with gives you a greater chance of developing cancer soo... eating plants gives you all the benefits for lifting with out causing the suffering and death of animals and slowly killing your self with cholesterol.