Focus on the "big three" exercises of squats, bench presses and dead lifts to build muscle quickly. These three exercises will help you get in shape quickly and allow you to keep building muscles. You can include other exercises in your workout, but make these three your priority. Some muscle groups are harder to bulk up than others. http://www.myhealthreviews.org/hd-testo-review-is-it-a-scam-or-legit/