Sit Up.

Make every rep count.

1. 01

   Lie on your back with knees bent and feet planted hip-width apart. Cross your arms over your chest and keep your neck neutral (eyes toward the ceiling).

2. 02

   Take a breath in. Exhale, brace your core, and curl up by lifting your shoulders and upper back off the floor—avoid yanking with your neck or using momentum.

3. 03

   Continue until your torso is near perpendicular to the floor, keeping your feet down and your lower back controlled.

4. 04

   Lower slowly back to the start with control, letting your shoulders touch down before the next rep.

5. 05

   Repeat for the prescribed reps.