Instructions

1

Lie supine on a mat with back flat, head in neutral position, arms extended alongside body, legs fully extended on the floor, feet flexed naturally.

2

Engage core and prepare to lift torso by contracting abdominal muscles. Hands can be positioned across chest or extended overhead for balance.

3

Lower the torso back to starting position with control, allowing abdominal muscles to lengthen and stretch under tension without fully relaxing between repetitions.

4

Drive through core engagement to lift torso toward thighs using abdominal contraction. Simultaneously bring knees toward chest, creating a V-shape with the body as legs and upper body converge at the midsection.

PRIMARY MUSCLESRectus Abdominis

SECONDARY MUSCLESIliopsoas, Rectus Femoris, Sartorius, Transverse Abdominis

EQUIPMENTBody weight

DIFFICULTYIntermediate

Overview

When programming for Rectus Abdominis growth, the Starfish Crunch beginner stands out as a highly efficient Strength, Cardio choice. Performing this movement with Body weight forces your stabilizer muscles to work in tandem with the primary movers, translating to functional strength and enhanced muscular endurance.

Benefits

Promotes balanced muscular development by effectively recruiting the Rectus Abdominis and associated synergists.
Utilizes Body weight to create sustained mechanical tension, forcing deep muscle adaptation.
Allows for a natural movement path that closely mimics functional daily activities.

Pro Tips

Control the eccentric (lowering) phase of the Starfish Crunch beginner for 3-4 seconds to drastically increase time under tension.

Muscle Anatomy

The primary driver is the Rectus Abdominis. However, the movement also recruits Iliopsoas, Rectus Femoris, Sartorius, Transverse Abdominis to maintain control of the Body weight.

Beginner Tips

If you are new to the Starfish Crunch beginner , focus on mastering the movement pattern with zero weight before adding Body weight.

Starfish Crunch beginner