PriaMax Male Enhancement Before you start working out your arms lay out your goals. If you are looking to bulk up, concentrate on heavy weights and intense workouts. If you want to sculpt and tone, simply do more reps with lighter weights.A good exercise to improve your quadriceps is leg extensions. Most gyms are equipped with a few leg extension machines, and these are relatively easy exercises. Just sit down and extend your legs one at a time.Building stronger abdominal muscles will go far toward maximizing your level of fitness. You can achieve this by doing morning sit-ups with weights or not. Having strong abs will give you more flexibility, and that will improve the success that you have with weight lifting.