Working all of your major muscle groups

Be sure that your routines include at least one exercise for each of the following muscle groups.

• Butt or buttocks (glutes)
• Front thighs (quadriceps)
• Rear thighs (hamstrings)
• Calves
• Chest (pecs)
• Back
• Abdominals (abs)
• Shoulders (delts)
• Front of upper arm (biceps)
• Rear of upper arm (triceps)

You have exercises for additional muscle groups, such as the wrist and shin muscles and inner and outer thighs. But for general fitness, the preceding muscles should be your highest priorities. If you neglect any of these muscle groups, you’ll have a gap in your strength, and you may set yourself up for injury.

If you avoid training any particular muscle group, you also may end up with a body that looks out of proportion. You don’t need to hit all your muscle groups on the same day — just make sure that you work each group twice a week.