Alternating Lying Straight Leg Raise

This isolation exercise targets the lower abdominals and hip flexors by lifting one straight leg at a time while lying supine. It builds core stability and strengthens the rectus femoris without requiring equipment.

HOW TO DO IT

  1. Lie flat on your back with legs fully extended.
  2. Slide hands under your glutes to support the lower back.
  3. Lift one straight leg until it forms a 90-degree angle with the floor.
  4. Lower that leg slowly while immediately raising the opposite leg.
  5. Continue alternating legs in a controlled rhythm without touching the ground.

COMMON MISTAKES

  • Allowing the lower back to arch off the floor.
  • Bending the knees during the lifting phase.
  • Swinging the legs using momentum instead of muscle control.
  • Rushing the movement and losing tension in the abs.

TIPS

  • Press your lower back firmly into your hands throughout the set.
  • Keep toes pointed to maintain tension in the quadriceps.
  • Exhale sharply as you lift each leg upward.

SAFETY

  • Stop immediately if you feel sharp pain in the lower back or hamstrings.

VARIATIONS

  • Double Lying Straight Leg Raise
  • Hanging Knee Raise
  • Reverse Crunch
  • Scissor Kicks

DETAILS

Muscles
AbdominalsRectus FemorisQuadriceps
Equipment
Bodyweight
Type
Strength Training
Difficulty
Intermediate
Tracked as
Weight & Reps

VARIANT

Position: lyingLaterality: alternating

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