Basic Sit-Ups with Perfect Form

Sit-up is an exercise performed with just body weight. They are also known as curl-up. Exercises mainly : abs muscle .



Primary muscles targeted

Sit-up muscles heatmap
Figure 1. Heatmap of muscles used in Sit-up.


  • knees at 90-degrees angle
  • feet may be together or slightly apart
  • heel is the only part of the feet that may contact the ground
  • fingers interlocked behind head
  • head, arms, hands and elbows may not touch the ground
  • raise body until core reach the vertical position (base of neck above base of spine)

Versus crunches

Sit-ups differ from crunches in that in them, the body should reach a vertical position, but in crunches only a 45° angle is required.


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The basic form of the sit-up exercise

Calisthenics And Street Workout exercises, circuits and progressions.
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