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Body Extension

Body Extension is a beginner bodyweight exercise for the primary: quadriceps. Most lifters train it for 2 to 3 sets of 8 to 12 reps.

A standing bodyweight movement where you reach overhead and extend the whole body in one line. Wakes up the posterior chain and shoulders, common in warm ups and mobility work.

QuadricepsBodyweight
Body Extension
Primary muscle
Primary: Quadriceps
Equipment
Bodyweight
Difficulty
Beginner
Typical volume
2–3 sets × 8–12 reps
Category
Quadriceps

How to Do the Body Extension

  1. Stand with feet hip width apart, arms relaxed at your sides and weight spread evenly through both feet.
  2. Inhale and sweep both arms forward and up until the biceps are beside the ears, palms facing each other.
  3. Rise onto the balls of the feet and reach the fingertips toward the ceiling, lengthening the spine as tall as possible.
  4. Squeeze the glutes and lift the chest into a slight upper back extension without letting the ribs flare or the lower back pinch.
  5. Hold the tallest position for one second, feeling the stretch through the lats, abdominals and hip flexors.
  6. Exhale and lower the heels and arms back to the start under control, then repeat for the next rep.

Common Mistakes

  • Bending from the lower back: Arching hard through the lumbar spine instead of the upper back turns a stretch into a pinch. Squeeze the glutes and brace lightly so the extension comes from the thoracic spine and shoulders.
  • Shrugging the shoulders up: Reaching with the traps rather than the lats crowds the neck. Keep the shoulders down and reach long through the fingertips instead of up through the ears.
  • Holding the breath: Tension in the breath limits how tall the body can get. Inhale on the way up and exhale slowly on the way down so each rep lengthens a little more.

Programming Tips

Place the body extension at the very start of a warm up or between sets of seated work for 2 to 3 sets of 8 to 12 reps. It is a mobility and activation drill, not a strength exercise, so it belongs before squats, presses or overhead work to open the shoulders and switch on the posterior chain.

Set up with the feet hip width and the arms relaxed, then move slowly enough that each reach lasts about two seconds. It is a bodyweight only movement; progress by adding a one to two second hold at the top, rising higher onto the toes for balance, or holding a light 1 to 2 kg plate overhead. The most common fault is extending from the lower back instead of the upper back, fixed by squeezing the glutes and keeping the ribs down as the arms travel overhead.

Common Questions

What does the body extension exercise work?

It stretches and activates the lats, shoulders, abdominals, hip flexors and glutes while mobilising the upper back. It is not a quad exercise despite often being listed under legs, because the knees barely move.

When should I do body extensions?

Do them at the start of a warm up or after long periods of sitting. Two or three sets of ten reps are enough to open the shoulders and hips before training.

Is the body extension good for posture?

Yes, it counters the rounded shoulders and tight hip flexors that come from sitting by taking the body into full extension. Done daily it helps you feel taller and makes overhead lifts easier to set up.

Track This Exercise in the App

Log your body extension sets in 1RM.fit and watch your estimated 1RM update automatically as you get stronger.

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