How to do sit-ups
The starting sit-up position:
- Lie on the floor with your knees bent and feet flat.
- The feet should be supported under something for stability, or have a partner holding them down.
- Lock your hands together behind your head.
- Lift your upper body from the floor and up toward the thighs, exhaling as your rise.
- Contract the abs hard and hold the position for a second.
- Lower the body back down to the starting position.
- Repeat for reps.
Similar in movement to the crunch, but with a greater range of motion, the sit-up is an isolation exercise used to develop strength in the abdominal muscles and hip flexors.
Once you can comfortably perform sit-ups for multiple sets and high number of reps you can increase the difficulty of the exercise by introducing additional weight.
Try holding a weight plate, medicine ball or wearing a weighted vest for increased resistance.