Abs · Bodyweight

Sit-Up

An isolation movement that trains your abs, done using just your bodyweight.

Sit-Up, starting positionSit-Up, end position
EquipmentBodyweight
TypeIsolation
Push or pullPull
LevelBeginner

Muscles you'll work

Sit-Up muscles worked, front viewSit-Up muscles worked, back view
AbsPrimary

How to do it

  1. Lie down on the floor placing your feet either under something that will not move or by having a partner hold them. Your legs should be bent at the knees.
  2. Place your hands behind your head and lock them together by clasping your fingers. This is the starting position.
  3. Elevate your upper body so that it creates an imaginary V-shape with your thighs. Breathe out when performing this part of the exercise.
  4. Once you feel the contraction for a second, lower your upper body back down to the starting position while inhaling.
  5. Repeat for the recommended amount of repetitions.

More ab exercises

Ab ScissorsAir BikeBicycle CrunchBicycle Crunch Raised Legs
Free · No card required

Log Sit-Up and watch it climb

Every set you finish decides the next one — heavier, more reps, or hold. You get the number and the reason before you lift it.

  • Free AI plans, no card
  • Every weight has a reason
  • Miss a day, the week re-fits

The AI writes the plan. The engine keeps coaching every session after that — free.