25. Glute bridges
Drive through your heels to maximize glute and hamstring activity. Try to complete 3 sets of 20 reps, with 30-second rest.
1. Lie flat on your back, bring the calves close to the thighs and place your hands on the floor.
2. Lift your hips off the floor as high as you can, squeezing the butt muscles at the top.
3. Then slowly lower your body to the floor and repeat.