3. Too Much Cardio
With the current state of the U.S. obesity epidemic, cardio certainly shouldn’t be demonized, but if your main focus is building strength and size, it shouldn’t form the backbone of your training. Steady state cardio at a moderate pace helps to build heart strength, but it also tailors your body towards type I muscle fibers – those with the least potential for growth. Your cardio training should mimic your strength training. That means the bulk of your time on the treadmill should involve intervals that feature brief periods of intense activity followed by recovery periods of light jogging or walking. The high intensity intervals allow you to increase muscle-building hormones and hit the bigger type II muscle fibers all while offering a great cardio workout.