Sit on the edge of a bench with your legs extended out in front of you. Anchor a resistance band to a sturdy object in front of you, then loop the band around your ankles, keeping tension in the band.

Bend your knees using your hamstrings and pull your heels toward the bench. Keep your upper body upright and core engaged. Stop when your knees are bent at about 90 degrees.

Slowly extend your legs back to the starting position, controlling the resistance from the band. Repeat for the desired number of reps.