#5. Lying gluteal bridge
Endurance exercises that mimic the motions involved in sex will prevent supporting muscles from quitting too soon when you really need them. Lie on your back with your knees bent and your feet flat on the floor. Place your arms at your sides, palms facing down. Squeeze your glutes and slowly raise your bottom off the floor until your body forms a straight line from your knees to your shoulders. Hold this position for 3-5 seconds, then slowly lower yourself to the floor and repeat the move 12 times. Rest for 30 seconds and repeat for a total of 3 sets.