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how to do crunches

Crunches are a beginner-level bodyweight exercise that primarily works your abs, with support from your obliques. No equipment needed — your bodyweight and a bit of floor space are enough.

primary musclesabs
also worksobliques
levelbeginner
equipmentnone — bodyweight
typerep-based

how it’s done, step by step

  1. Lie on your back with knees slightly bent, feet placed on the floor and arms raised to the shoulder height.
  2. Squeeze your abdominals and lift your upper back off the floor, reaching forward with your arms
  3. Hold for few seconds and slowly return to the starting position.

form tips from the wandelbar coaches

  • Keep your neck relaxed and avoid pulling on it with your hands to prevent strain.
  • Focus on engaging your core muscles throughout the movement to maximize effectiveness.
  • Breathe steadily, exhaling as you lift into the crunch and inhaling as you lower back down.
crunches bodyweight abs exercise — proper form demonstration
crunches — correct starting position

similar bodyweight exercises

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never wonder what to train next

crunches is one of 1,300+ exercises in the wandelbar app — where you don’t pick exercises at all. Answer a few questions, get a personal 90-day bodyweight plan, and it reshapes itself after every session. free for 7 days.

train with a plan that adapts.

350+ exercises, guided sessions, zero equipment needed.

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