Seated Frog Half to Full Sit-up

Perform the Seated Frog Half to Full Sit-up to strengthen your core and improve flexibility.

  1. Begin seated with your feet flat on the floor and knees bent outward.
  2. Engage your core and lean back slightly, then curl your torso forward to perform a half sit-up.
  3. For a full sit-up, continue to curl your torso until you sit upright, keeping your feet grounded.
  4. Lower back down to the starting position and repeat.

How to perform the Seated Frog Half to Full Sit-up

  1. Set up. Set up in a stable, balanced starting position appropriate for the Seated Frog Half to Full Sit-up using your body weight.
  2. Brace and execute. Brace your core, control the descent, and move through a full pain-free range of motion while emphasizing your abdominals.
  3. Reset. Reverse the movement under control and reset between repetitions, keeping your form crisp on every rep.

Coaching cues

  • Move with intent — every rep should feel deliberate, not rushed.
  • Drive force through your abdominals rather than momentum.
  • Keep your breathing steady: exhale on the hard part, inhale on the reset.

Common mistakes

  • Using too much weight and losing positional control.
  • Cutting the range of motion short and missing the target muscle.
  • Letting your spine round or hyperextend instead of staying neutral.

Detailed cues, common mistakes, and demonstration video are available in the Fitly app.

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