Inchworm
Muscles Worked: Inchworm
The inchworm mainly trains your abs because they brace your torso while you walk your hands out and stop your lower back from sagging. Your shoulders, especially the front delts, help support your bodyweight once you reach the long plank position. Your hips, hamstrings, and calves also get a stretch as you fold forward and step your feet in. Done well, you should feel your midsection working hard to keep you steady and your shoulders supporting you at the front of each rep.
Technique and form
How to perform the Inchworm
- Stand tall with your feet hip-width apart, arms at your sides, and maintain a neutral spine position.
- Hinge at your hips and bend forward, placing your palms flat on the floor in front of your feet while keeping your legs as straight as possible.
- Walk your hands forward away from your feet, keeping your core engaged and maintaining a straight line from head to heels as you move into a high plank position.
- Pause briefly in the high plank position, ensuring your shoulders are stacked over your wrists and your body forms a straight line.
- Begin walking your hands back toward your feet in small, controlled movements while keeping your legs straight or with minimal bend in the knees.
- As your hands approach your feet, allow your hips to rise upward, transitioning into a forward fold position.
- Once your hands reach your feet, pause briefly in the forward fold, breathing deeply while maintaining tension in your hamstrings.
- Slowly roll up to the starting position, stacking one vertebra at a time until you return to standing, and exhale at the top.
Important information
- Keep your core engaged throughout the entire movement to protect your lower back and maintain proper form.
- Take small, controlled steps with your hands rather than reaching too far, which helps maintain stability and proper alignment.
- If you feel excessive hamstring tightness, slightly bend your knees to prevent straining the muscles while still getting an effective stretch.
- Focus on creating a straight line from head to heels during the plank portion, avoiding sagging hips or raised buttocks.
Does the Inchworm improve flexibility?
Yes. The inchworm is a useful mobility drill because it opens up the back of your legs, gets your shoulders moving under load, and teaches your core to stay tight while your body changes position. It also raises body temperature quickly, which is why it works well in a warm-up before lifts, runs, or field sports.
- Hamstring mobility — Each rep starts with a forward fold, which gives the back of your thighs a loaded stretch. If your knees stay only slightly bent, you can improve how easily you hinge at the hips without forcing the range.
- Shoulder movement with support — When you walk your hands out, your shoulders move overhead while they hold some of your bodyweight. That makes the inchworm a good bridge between simple mobility work and harder plank-based drills like the high-plank.
- Core control — The long plank portion teaches you to keep your ribs down and hips level while your hands and feet move. That helps you build the kind of trunk control you need for push-ups, carries, and exercises like the mountain-climber.
- Warm-up value — Because one rep includes a fold, a walkout, a plank, and a return, you move several joints in one short sequence. That makes it time-efficient when you want more movement quality without adding much fatigue.
Programming for flexibility
Do 2-4 sets of 5-8 slow reps, resting 30-45 seconds between sets. Use it 3-5 days per week in your warm-up or on recovery days. Move slowly enough to pause for 1-2 seconds in the folded position and again in the plank so you actually gain range instead of rushing through the rep.
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FAQ - Inchworm
The Inchworm primarily engages your core muscles (especially the abdominals) and front deltoids (shoulders). It also activates your hamstrings, calves, lower back, and chest while improving mobility throughout your shoulders, spine, hips, and ankles.
If you're new to the exercise, bend your knees slightly during the forward fold to reduce hamstring strain. You can also take smaller steps with your hands and perform fewer repetitions until you build strength and flexibility. As you progress, gradually straighten your legs and increase the distance covered.
The three most common mistakes are sagging in the lower back during the plank position, rushing through the movement without control, and not walking the hands out far enough. Focus on maintaining a neutral spine, moving with deliberate control, and creating a full-length plank position with your hands directly under your shoulders.
Inchworms are versatile enough to include 2-4 times weekly, either as part of your warm-up routine (6-8 repetitions) or within your HIIT circuits (10-12 repetitions). They're gentle enough for frequent use while still providing meaningful benefits for mobility and core strength.
Yes, you can intensify the exercise by adding a push-up at the plank position, incorporating a jump when returning to standing position, or performing it with one leg raised during the plank phase. These variations increase the core stability demands and cardiovascular intensity of the movement.
Workouts with Inchworm
Inchworm
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