Workout Type:
Core
Difficulty Level:
Beginner
Equipment needed:
None

How To Do Inch Worm

The inch worm is a full body movement that targets your core, shoulders, chest, and hamstrings. It combines a forward fold with a walkout to a plank, making it great for warming up and building shoulder and core control. Proper form matters because letting your hips sag or rushing the walkout can strain your lower back and take work away from the muscles you want to train.

Step-by-Step Guide to Properly Execute Inch Worm

Starting Position

Stand tall with your feet about hip-width apart. Brace your core gently, keep your shoulders relaxed, and set your gaze slightly forward. Soften your knees just a little so you can hinge at the hips without rounding your lower back.

Lowering Phase

Hinge your hips back and fold forward, reaching your hands toward the floor. Aim to keep your spine long and your chest open as you lower. Place your hands on the ground in front of your feet, as close as your mobility allows, without forcing it.

Pushing Phase

Walk your hands forward one step at a time until you reach a strong high plank. Keep your wrists under your shoulders, squeeze your glutes, and brace your abs so your body stays in a straight line from head to heels. Once stable, walk your feet forward in small steps toward your hands while keeping your hips as high as you can without rounding hard through your back.

Finishing Position

When your feet are close to your hands, pause, then stand back up by driving through your feet and unfolding from the hips. Reset your posture, and begin the next rep with control.

Inch Worm Workout Plan for All Levels

Beginner: 2 sets x 6 reps, 2 to 3 min rest, 2 times per week
Intermediate: 3 sets x 8 reps, 2 to 3 min rest, 3 times per week
Advanced: 4 sets x 10 reps, 2 to 3 min rest, 4 times per week

What Are The Benefits Of Inch Worm

  • Builds core control and full body tension
  • Improves hamstring mobility and hip hinge pattern
  • Warms up shoulders and wrists for pushing movements
  • Trains plank stability and shoulder strength

Common Mistakes to Avoid

  • Letting hips sag in the plank: This can stress your lower back. Squeeze glutes and brace abs.
  • Rounding the back to reach the floor: Use a small knee bend and hinge from the hips instead.
  • Rushing the walkout: Move slowly so your shoulders and core stay in a strong position.
  • Hands too far in front in plank: Keep wrists stacked under shoulders for safer loading.

Similar Exercises To Try For Your Workout

  • Walkout to plank
  • Bear crawl
  • Downward dog to plank

FAQ About “Inch Worm”

How many inch worms should I do per set?

6-8 reps, 2-3 sets. Each rep should take about 5-6 seconds. Walk your hands out to a plank, pause, then walk your feet to your hands. Don't rush. The stretch and control at each end is where the benefit comes from.

Are inch worms a warm-up or a workout exercise?

Primarily warm-up. They stretch the hamstrings, activate the shoulders, and engage the core all in one movement. I program 2 sets of 6 at the start of every upper body session. They can be part of a workout circuit too, but they're best used to prime the body.

Why do my hamstrings feel so tight during inch worms?

Because the walk-back phase stretches them under load. That's the point. If they're extremely tight, bend your knees slightly during the walk-back. Over 2-3 weeks of daily inch worms, your hamstring flexibility will noticeably improve.

What muscles do inch worms work?

Shoulders, core, and hamstrings. The walk-out loads the shoulders and core like a plank. The walk-back stretches the hamstrings and calves. It's one of the most complete warm-up movements because it hits the full posterior chain and the shoulders in one exercise.

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