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Sit-up exercise demonstration - starting position (step 1 of 2)
Showing step 1 of 2
Step-by-step demonstration of the Sit-up exercise showing proper form and technique

Sit-up

Target Muscles

Secondary:
Obliques

Equipment Required

Bodyweight

Exercise Type

Reps Only

How To Do

Lie on your back with knees bent and feet flat on the floor, placing your hands behind your head or across your chest. Engage your core and curl your upper body toward your knees, lifting your shoulders off the ground without pulling on your neck. Lower back down with control, keeping your abs engaged throughout the movement.

Step-by-Step Instructions

  1. Lie on your back with your knees bent and feet flat on the floor.
  2. Place your hands behind your head or across your chest, but avoid pulling on your neck.
  3. Engage your core muscles to stabilize your spine.
  4. Slowly curl your upper body towards your knees, lifting your head, shoulders, and upper back off the floor. Focus on using your abdominal muscles to perform the movement.
  5. At the top of the movement, exhale and squeeze your abdominal muscles.
  6. Slowly lower your upper body back down to the starting position, maintaining control and engaging your core throughout the movement. Inhale as you lower down.
  7. Repeat for the desired number of repetitions.

Explore more abs exercises or bodyweight exercises in our exercise library.

Alternative Exercises

Frog Crunch

Frog Crunch

Abs
Upper Abs

Bodyweight

Hip Raise Crunch

Hip Raise Crunch

Lower Abs
Upper Abs

Bodyweight

Kettlebell Sit-up

Kettlebell Sit-up

Abs
Upper Abs

Kettlebell

Barbell Press Sit-Up

Barbell Press Sit-Up

Abs
Chest

Bench • Barbell

Frequently Asked Questions

What muscles do sit-ups work the most?
Sit-ups primarily target the abdominal muscles, especially the upper and lower abs. They also engage the obliques as secondary muscles, helping with core stability and rotational strength.
Do I need any equipment to do sit-ups at home?
No equipment is required to perform sit-ups; you can do them using just your body weight on a comfortable surface like a yoga mat. However, you can add resistance with a weight plate or stability ball to increase the challenge.
Are sit-ups safe for beginners?
Yes, sit-ups can be safe for beginners if performed with proper form and without straining the neck or lower back. Start with a small range of motion and build up gradually to avoid injury.
What are common mistakes to avoid when doing sit-ups?
Common mistakes include pulling on the neck, using momentum instead of muscle control, and arching the lower back. Keep your core engaged, movement slow and controlled, and your chin away from your chest to maintain good form.
How many sit-ups should I do for best results?
For general fitness, 2–3 sets of 10–20 sit-ups are effective, depending on your fitness level. Focus on quality of movement rather than high numbers, and increase reps gradually as your core gets stronger.
What variations of sit-ups can make the exercise more challenging?
You can try weighted sit-ups, decline bench sit-ups, or twisting sit-ups to increase difficulty and target more muscle groups. These variations add resistance or rotation, engaging deeper core muscles and improving overall strength.
Can sit-ups cause back or neck pain?
Incorrect form or overtraining can lead to discomfort in the back or neck. To prevent pain, keep your spine neutral, engage your core throughout each rep, and avoid jerking movements or lifting too high.