Single Leg Kickback
Get into a kneeling push-up position with your hands underneath your shoulders and your knees underneath your hips bent to 90 degrees.
Brace your core to keep a neutral spine.
Keeping your ankles bent to 90 degrees, extend your right hip by flexing your right glute to elevate your right foot off the ground.
Lift your leg until the hamstrings are in line with the back while maintaining the 90 degree angle bend. Contract the glutes during this movement and hold the top position for a brief moment.
Return to the starting position and repeat with the opposite side.