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Last updated February 2, 2026
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abs
Crunch Floor
Lie on your back with feet flat. Curl your head and shoulders off the floor, sliding your hands up your thighs. Keep your lower back pressed down to protect your spine.
Quick facts
- Difficulty
- Easy
- Mechanic
- Isolation
- Force
- Pull
- Type
- Strength
- Injury Risk
- Low
- Hypertrophy
- Low
- Calorie Burn
- Low-Medium
Muscle focus
Primary and secondary muscle groups targeted by this movement.
Primary
abs
Secondary
deep abs / core
Equipment & setup
What you need and how to position yourself before starting.
Equipment
body weight
Movement pattern
Bilateral
Posture
Lying
Tracking parameters
repsweight
Step-by-step instructions
Follow these cues to master proper technique and stay safe through every rep.
- Step 1Setup
- Lie flat on your back on the floor with your knees bent and feet flat on the ground.
- Place your hands behind your head or cross them over your chest.
- Step 2Position Your Feet
- Ensure your feet are hip-width apart and firmly planted on the ground.
- Keep your knees bent at a 90-degree angle.
- Step 3Engage Your Core
- Tighten your abdominal muscles to prepare for the movement.
- Keep your lower back pressed against the floor.
- Step 4Lift Your Shoulders
- Exhale as you lift your shoulders off the ground by curling your upper body towards your knees.
- Keep your neck neutral and avoid pulling on your head with your hands.
- Step 5Hold the Position
- Pause briefly at the top of the movement, squeezing your abdominal muscles.
- Make sure not to lift your lower back off the floor.
- Step 6Lower Your Body
- Inhale as you slowly lower your shoulders back down to the starting position.
- Maintain control and avoid letting your shoulders slam back to the floor.
- Step 7Repeat
- Continue to perform the crunches for the desired number of repetitions.
- Focus on maintaining proper form throughout each rep.
- Step 8Finish the Exercise
- After completing your reps, gently lower your feet to the ground and relax your body.
- Take a moment to breathe and stretch your abdominal muscles.