Work Muscle Groups Separately
The body is made up of more than 600 muscles. That means you're going to have to have a smart plan of attack. Begin by dividing those muscles into groups: arms, shoulders, back, chest, abs and legs. Make sure you're focusing on each of these groups separately to get the most out of your workouts. [source: Haycock]. Let's say you work out three times a week. On Mondays, you'll concentrate on your chest and biceps with exercises like bench presses, push-ups and curls. On Wednesdays, you'll focus on your abs, legs and back with squats, sit-ups and dead lifts. On Fridays, you can go back to your upper body, pounding out some rows or lat-pull downs for your shoulders and triceps.
A strategic plan focusing on different muscles groups will allow you to maintain your momentum without overworking particular muscles.