Split Routines

Regardless of your goals, you need to hit each muscle group at least twice a week. The simplest way to accomplish this is to perform two total-body workouts per week; in other words, twice a week perform a routine that works every major muscle group.
Total-body workouts are great if you’re doing only one or two exercises per muscle group. But when you get serious about weight training — adding exercises and sets — a total-body workout can become tedious. If your schedule permits you to lift weights at least 4 days a week (the sessions can be as short as 15 minutes), consider doing a split routine. You split a total-body routine into two or three shorter routines. For example, you can train your upper body on one day and your lower body the next. You can even split your upper body muscles into three different workouts. (We discuss these options in detail later in this section.)
Split routines are ideal for people who have the time to work out several days a week but may not have much time for each workout session. Split routines also work well for people who have a short attention span for weight training or who want to give each muscle group an extra-hard workout. Brief, focused workouts help you stay motivated. If you walk into the gym knowing that all you have to do today is work your back and biceps, you’re more likely to give those muscle group exercises an all-out effort.
When designing a split routine, you need to follow two basic rules: Hit each muscle group at least twice a week, and don’t work the same muscle group on consecutive days. This second rule is a bit more complicated than it sounds. For example, you may think that it’s okay to work your triceps and thighs on Monday and then your chest and butt on Tuesday. Actually, it’s not. You see, most chest exercises also work the triceps, and most butt exercises also work the thighs. So, if you work your triceps on Monday, they won’t have recovered sufficiently by Tuesday to help out on your chest exercises. These rules may sound confusing, but within a few weeks, they’ll become second nature. Until then, here’s a list of muscle pairs that you shouldn’t work on back-to-back days:

• Chest and triceps
• Back and biceps
• Butt and thighs