Old-School Reverse Extension

Old-School Reverse Extension: Form, Muscles Worked, Sets, Tips & FAQ

Old-School Reverse Extension: Form, Muscles Worked, Sets, Tips & FAQ
Upper Arms

Old-School Reverse Extension

Intermediate Barbell + Flat Bench Triceps / Hypertrophy / Control
The Old-School Reverse Extension is a deep-range lying triceps extension variation that places a strong emphasis on the long head of the triceps. By lowering the bar behind the head and then extending the elbows back to the top, this movement combines a big stretch with a strong contraction. Done correctly, it can be an excellent upper-arm builder for lifters who want more triceps size, better lockout strength, and a classic free-weight arm exercise with serious tension.

This exercise works best when you control the eccentric, keep your elbows steady, and avoid turning it into a loose press. The goal is to challenge the triceps through a long range of motion while keeping the shoulders stable and the wrists stacked over the forearms. Use a load you can lower with confidence and reverse smoothly without bouncing or flaring excessively.

Safety tip: Start light and stay strict. If you feel sharp elbow pain, shoulder discomfort, or loss of control at the bottom, reduce the weight, shorten the range slightly, or stop the set.

Quick Overview

Body Part Triceps
Primary Muscle Triceps brachii (especially the long head)
Secondary Muscle Anconeus, anterior deltoids, forearms, and upper-arm stabilizers
Equipment Barbell or EZ-bar, flat bench, weight plates, collars
Difficulty Intermediate

Sets & Reps (By Goal)

  • Muscle growth: 3–4 sets × 8–12 reps with controlled tempo and 60–90 seconds rest
  • Strength focus: 4–5 sets × 5–8 reps with a heavier load and 90–120 seconds rest
  • Technique / control: 2–3 sets × 10–15 reps using a lighter weight and a slow eccentric
  • Arm finisher: 2–3 sets × 12–15 reps with strict form and short rest

Progression rule: Add reps before adding load. Only increase the weight when you can keep the elbows under control and maintain a smooth stretch-to-lockout path.

Setup / Starting Position

  1. Lie flat on a bench: Position your head near the end of the bench so the bar can travel comfortably behind it.
  2. Grip the bar securely: Use a shoulder-width or slightly narrow grip, depending on wrist comfort and equipment.
  3. Press the bar to the top: Start with the bar above your chest or shoulders with elbows nearly locked.
  4. Set your upper arms: Keep them stable and slightly angled back rather than letting them drift all over the place.
  5. Brace lightly: Keep your feet planted, core tight, and shoulders packed into the bench.

Tip: Many lifters find an EZ-bar more comfortable than a straight bar because it reduces wrist strain during the extension.

Execution (Step-by-Step)

  1. Lower the bar behind your head: Bend at the elbows and guide the bar in a controlled arc behind the head rather than straight to the forehead.
  2. Feel the stretch: Pause briefly in the bottom position when your triceps are fully lengthened and your elbows remain under control.
  3. Extend the elbows: Drive the bar back up by straightening the arms without turning the movement into a chest press.
  4. Reach the top position: Finish with the bar above the chest or shoulders and the triceps fully contracted.
  5. Repeat smoothly: Keep tension on the triceps and maintain the same bar path on every rep.
Form checkpoint: The bar should travel in a controlled arc. If your elbows flare hard, shoulders roll forward, or the movement turns sloppy near the bottom, the weight is probably too heavy.

Pro Tips & Common Mistakes

  • Lower behind the head, not just to the forehead: This increases the stretch and better targets the long head of the triceps.
  • Don’t let the elbows drift excessively: A little natural movement is fine, but too much turns the lift into a hybrid press.
  • Control the negative: The eccentric phase is where this exercise becomes especially effective for hypertrophy.
  • Avoid ego loading: Too much weight usually causes elbow flare, shortened range, and loss of triceps tension.
  • Keep wrists neutral: Bent wrists can make the lift less comfortable and reduce control.
  • Use a spotter when going heavy: This is especially helpful if you are pushing near failure with a straight bar.

FAQ

What muscles does the Old-School Reverse Extension work most?

It mainly targets the triceps brachii, especially the long head because of the deep stretch created when the bar is lowered behind the head.

Is this the same as a skull crusher?

It is closely related, but this version usually uses a deeper range of motion behind the head rather than stopping near the forehead. That extra stretch can make it feel more demanding on the triceps.

Should I use a straight bar or an EZ-bar?

Both can work, but many lifters prefer an EZ-bar because it feels easier on the wrists and elbows. A straight bar can still be effective if it feels comfortable for your structure.

How heavy should I go?

Use a weight you can control through the entire range of motion. If you have to shorten the stretch, flare the elbows aggressively, or bounce out of the bottom, the load is too heavy.

Is this exercise good for building bigger upper arms?

Yes. Since the triceps make up a large portion of upper-arm size, a strict deep-stretch extension like this can be very effective for building more arm mass when programmed consistently.

Disclaimer: This content is for educational and informational purposes only and does not replace professional medical, training, or rehabilitation advice.

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