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Muscle Building

JM Press for Tricep Mass

Coach Kelvin Lim

Build massive triceps with the JM press. A hybrid bench-skull crusher that targets all three tricep heads.

The JM press - named after powerlifter JM Blakley - is a hybrid between a close-grip bench press and a skull crusher. It may be the single best tricep mass builder, yet almost nobody in Malaysian gyms does it.

How It Differs from Close-Grip Bench

In a close-grip bench press, the bar moves in a relatively straight line. In a JM press, the bar lowers toward your chin/upper chest area (like a skull crusher) but you press it back up and slightly forward (like a bench press). This combination creates more tricep tension than either exercise alone.

Technique

  1. Lie on a flat bench, grip the bar slightly narrower than shoulder width
  2. Unrack and hold above your upper chest
  3. Lower the bar toward your chin/throat area - elbows come forward
  4. When forearms touch biceps (full elbow flexion), press back up and slightly toward your chest
  5. The bar path is a slight J-curve, not straight up and down

Key Cues

  • Elbows drift forward as you lower - this is what makes it different from bench press
  • Forearms touch biceps at the bottom - full stretch on the triceps
  • Press up and back - slight angle, not straight vertical
  • Keep it controlled - this is not a speed exercise

Programming

  • 3-4 sets of 8-12 reps
  • Use after your main bench press or overhead press
  • Start with about 50% of your bench press weight - the movement is harder than it looks
  • Increase weight slowly as you master the technique

Safety

The bar does pass near your face. Use a spotter or perform in a Smith machine until you are comfortable with the movement pattern. Many lifters in Malaysian gyms use the Smith machine version with great results.

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