Recommended Sets and Reps: Perform 3 sets of 8 to 12 reps. Rest for 45 to 60 seconds between sets. Recommended Sets and Reps: Perform 3 sets of 8 to 15 reps. Rest for 45 to 60 seconds between sets. Recommended Sets and Reps: Perform 3 sets of 8 to 12 reps. Rest for 60 seconds between sets. Recommended Sets and Reps: Perform 3 sets of 10 to 15 reps. Rest for 30 to 45 seconds between sets. How to Use These Classic Exercises After 60Use these exercises as a full-body strength circuit two to four days per week.