Building a stronger, leaner, and healthier body often requires that you separate fact from fiction. And there is a lot of bad information out there. To keep you from falling victim to it, thereby preventing you from hitting your fitness goals, here are 12 myths about muscle mass increase…and the truths behind them.To build muscle, you need to strength train slowly. Research shows that faster movements help you lift heavier weights for longer.You should always push your muscles to exhaustion. While this is okay in some exercise sessions, you also want to have some workouts that are easier on the body.Working out when you’re even a little sore can hurt your muscle growth. If you’re just slightly sore, working out is okay. You don’t need to warm up before strength training. You should always warm up before performing any exercise, even if it isn’t traditional cardio.Building muscle is more important than cardio. Cardio is not only good for your heart, but it also helps reduce the fat covering your muscle, giving you a more tone physique.To build muscle, limit rest between sets. A lot of the pros rest 1-2 whole minutes between sets.The more you lift, the bigger your muscles will get. Rest is critical to muscle growth, so taking days off is a priority.Free weights are superior to machines. If you’re unsure of proper form or relatively new to fitness, then machines can help make sure you’re doing the exercises correctly.You can’t build muscle without weights. Bodyweight exercises can be just as effective, no equipment required.Increasing muscle mass means cutting carbs. Carbs are a necessary nutrient, helping your body replenish the sugars it’s lost during your exercise sessions.Once you’re ripped, you can eat what you want. Not true. You should always eat healthy.Never miss a workout, even if it cuts into your sleep. Sleep is critical to helping your muscles heal, so don’t be afraid to skip a workout now and again.