Seated Single Leg Knee Flexion

Perform the seated single leg knee flexion to strengthen your hamstrings and improve knee stability.

  1. Sit on a sturdy chair with your back straight.
  2. Extend one leg straight out in front of you.
  3. Bend your knee to bring your heel towards your glutes.
  4. Lower your foot back to the starting position and repeat.

How to perform the Seated Single Leg Knee Flexion

  1. Set up. Set up in a stable, balanced starting position appropriate for the Seated Single Leg Knee Flexion 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 quadriceps.
  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 quadriceps 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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