What should I feel during JM press?

Tricep stretch at bottom like skull crusher; press force like close-grip bench.

What are common mistakes with JM press?

Bar path too vertical — becomes close-grip bench, loses the hybrid angle; Excessive elbow flare — shifts load to chest unnecessarily; Too heavy — triceps fail explosively; use moderate load with control

How do I progress JM press?

Load once form is consistent; combine with board press for lockout.

What can I do instead of JM press?

Close-grip bench, Skull crusher, Cable pushdown

JM press

Bench setup; bar angled toward face (bench × skull crusher hybrid); elbows ~45°.

family=jm presspattern=elbow extensionforce=pushmechanic=isolationequipment=free_weight

Muscles

muscle emphasis · training guidance

tricepsPRIME

chest68

front delts56

Primary: triceps
Supporting: chest, front delts

Mechanics

Pattern: elbow extension
Equipment: barbell
Geometry: Variable Range
Target feel: Tricep stretch at bottom like skull crusher; press force like close-grip bench.
Progression: Load once form is consistent; combine with board press for lockout.
Regression: Close-grip bench press as the strength base before JM.

Watch for

Bar path too vertical — becomes close-grip bench, loses the hybrid angle
Excessive elbow flare — shifts load to chest unnecessarily
Too heavy — triceps fail explosively; use moderate load with control

Equipment context

The barbell version lets you move the most absolute load, while your grip and shoulder girdle stabilize the path.

Substitutions

See all 36 triceps exercises in the Atlas

Progression ladder

Beginner / regression: Close-grip bench press as the strength base before JM.
Standard: JM press
Advanced / progression: Load once form is consistent; combine with board press for lockout.

Atlas metrics

Movement pattern: elbow extension
Primary target: triceps
Supporting muscles: chest, front delts
Equipment: barbell
Joint geometry: Variable Range
Alternatives: 3 substitutions

Evidence & limits

Last reviewed against peer-reviewed biomechanics references. Exercise descriptions are framed as training guidance, not medical advice.

Source: ExRx.net Exercise & Muscle Directory

Eccentryx is fitness software. It is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease, injury, or medical condition. Consult a licensed physician before beginning any exercise program.

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FAQ

How do I set up JM press?: Bench setup; bar angled toward face (bench × skull crusher hybrid); elbows ~45°.
What should I feel during JM press?: Tricep stretch at bottom like skull crusher; press force like close-grip bench.
What are common mistakes with JM press?: Bar path too vertical — becomes close-grip bench, loses the hybrid angle; Excessive elbow flare — shifts load to chest unnecessarily; Too heavy — triceps fail explosively; use moderate load with control
How do I progress JM press?: Load once form is consistent; combine with board press for lockout.
What can I do instead of JM press?: Close-grip bench, Skull crusher, Cable pushdown

Asset in production

Verified form media not published yet

This indexed Atlas page keeps the exercise metadata live while the verified form asset is in production. No generated or placeholder exercise media is shown here.

Movement family: jm press
Force type: push
Graph edges: 1360 Atlas movement links reviewed

Nearest visible substitute: Close-grip bench press

nearest visible Atlas substitute found in 1 movement graph hop
movement graph path: JM press -> Close-grip bench press
curated substitution in the Atlas
same target muscle: triceps

Train JM press in Gym Mode → Browse the public Atlas →