Sometimes being too focused on losing weight can work against you. Everyone needs a break now and again. Plus, your muscles grow during the repair and recovery phase so take a look at your workout schedule and make sure you're not overdoing it. Weight gain or a weight-loss plateau is one of the signs of overtraining. Others include exhaustion, depression, lethargy, and catching every cold going around. You don't need to work out every single day to be fit and healthy!