Inchworm

Definition

The inchworm is a bodyweight compound exercise where the athlete bends at the waist, walks the hands forward into a plank or push-up position, then walks the feet back toward the hands. It combines a hamstring stretch, core engagement, and shoulder stabilization in a single flowing movement, making it one of the most efficient warm-up exercises for HYROX^® athletes.

Technique & Form

1. Starting position - Stand with feet hip-width apart, arms at the sides.
2. Hinge and reach - Hinge at the hips and place the hands on the floor in front of the feet (bend the knees slightly if needed).
3. Walk out - Walk the hands forward one at a time until you reach a full plank position. Optionally perform a push-up.
4. Walk back - Walk the feet toward the hands in small steps, keeping the legs as straight as possible to stretch the hamstrings.
5. Stand - Return to the upright position. That is one rep.

Muscles Worked

• Primary movers: Core, anterior deltoids, pectorals, hamstrings (stretch)
• Stabilizers: Triceps, serratus anterior, hip flexors, calves

Common Mistakes

• Rushing - Moving too fast reduces the stretch and core engagement. Fix: take 3-4 seconds walking out and 3-4 seconds walking back.
• Sagging hips in plank - Fix: brace the core and keep the body in a straight line during the plank position.

Benefits

• Full-body warm-up in a single exercise: hamstring stretch, core engagement, shoulder stabilization.
• Increases heart rate gradually for training readiness.
• Requires zero equipment and minimal space.

HYROX^® Context

The inchworm is a warm-up staple that prepares the entire body for HYROX^® training. The hamstring stretch prepares for running and deadlift patterns; the plank position activates the core for carries and loaded exercises; the shoulder work warms up the pressing muscles for sled pushes and wall balls. Program 6-10 reps during your warm-up before every session.

Variations & Alternatives

• Hamstring Walkout - Supine eccentric hamstring focus.
• High Knees - Dynamic warm-up for hip flexors.
• Hand Release Push Up - Push-up variation for pressing readiness.

FAQ

How many inchworms should I do? 6-10 reps during warm-up. Add a push-up at the bottom for extra pressing activation.

Can I do inchworms every day? Yes. They are low-impact and serve as excellent daily movement preparation.

Warm up efficiently for every HYROX^® session with ROXBASE.