There are two basic approaches to training frequency within CrossFit; 3 days on 1 day off or 5 days on 2 days off. The purpose of rest days is allow you body to adapt to the stress placed on it through training. Taking rest days give our nervous, muscular, and endocrine system time to repair and rebuild stronger than before. A well programmed rest day also allows an athlete to maintain intensity in a WOD. Intensity is the independent variable most commonly associated with maximizing favorable adaptation to exercise. If you’ve been in the gym for the past 10 days soreness and fatigue are most likely going to diminish that intensity. Taking rest days also give us an opportunity to apply our fitness. Get outside, learn and play new sports, develop skills beyond CrossFit. Finally, it’s important to realize that we have lives outside the gym. When it comes down to how much to train the best recommendation is to train as much as what works for you. Whether that’s a strict schedule or based on feel and energy level, whatever is sustainable and keeps you excited to train day to day!