High knees
Drive your left knee toward your chest as high as you can get it, then immediately bring it to the ground and replace it with your right knee.
Try and focus on keeping your body as tight as possible and use your arms to pump you and move you faster, just as you would if you were sprinting. Focus on intensity and go as fast as you can!
Reptile push-ups
Start in a push-up position with your shoulders directly over your hands.
Tighten your abs, glutes and thighs as you lower your chest to the floor. At the same time, bring one knee toward your elbow on the same side of your body, then push yourself back up and repeat on the opposite side.
If you’re a beginner, you can do reptile push ups with your hands on an elevated surface or while on your knees to make the exercise easier.
