So, the bro-split is not necessarily a bad thing. I used to do it myself. It just isn’t the most effective way to gain muscle, especially if you are a natural. People on steroids and enhancers can get away with the bro-split and still get crazy results. The most effective way to train for muscle growth is to hit each muscle group at least twice per week. You do not have to workout 6 days per week. Your muscles usually are repaired and recovered after about 36 hours. Ready to be hit again.