Or a muscle group you work every day, when you exercise. Does anyone do this, and have opinions on it's benefits? Over the summer I do BJJ 6x weekly and exercise 4x a week, and when I do, I've been wondering a lot about the benefits/detriments of exercising certain muscle groups (chest, legs) every time. Am I not getting adequate rest for muscle growth? I focus on conditioning as well as heavy/olympic lifting, on different days. How should it be broken down? Any advice is greatly appreciated.