How to jm press
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Last updated: April 4, 2026
Key Facts
- The JM press is an advanced triceps exercise that can build significant mass and strength.
- It's a variation of the close-grip bench press, emphasizing the triceps more than a standard bench press.
- Proper form involves keeping the elbows tucked to isolate the triceps and protect the shoulders.
- The exercise can be performed with an EZ-bar, barbell, or dumbbells.
- It's crucial to start with lighter weights to master the technique before increasing the load.
What is the JM Press?
The JM press is a compound exercise that is highly effective for building triceps strength and size. It's named after competitive bodybuilder Jim Morris, who popularized the movement. While it shares similarities with the close-grip bench press, the JM press involves a unique movement pattern that places a greater emphasis on the triceps brachii. It's considered an advanced exercise and requires good shoulder and elbow health, as well as proper technique to perform safely and effectively.
How to Perform the JM Press
Performing the JM press correctly is crucial to maximize its benefits and minimize the risk of injury. Here's a step-by-step guide:
Setup:
- Lie flat on a bench with your feet firmly planted on the floor, hip-width apart.
- Grip an EZ-bar or a barbell with an overhand grip, slightly narrower than shoulder-width apart. Some individuals prefer a grip as narrow as 6 inches, but it's essential to find a width that feels comfortable and allows for proper elbow positioning.
- Position the bar over your upper chest or forehead.
Execution:
- Begin by lowering the bar towards your upper chest or forehead. The key here is to keep your elbows tucked in close to your body, pointing slightly backward. Avoid letting your elbows flare out to the sides, as this will shift the emphasis away from the triceps and put unnecessary stress on your shoulder joints.
- As you lower the bar, aim to bend your elbows, allowing the bar to descend in an arc towards your head. This is where the JM press differs from a standard close-grip bench press; the bar path is more controlled and involves a slight flexion at the elbow.
- Once the bar reaches the top of your forehead or just above your upper chest, pause briefly.
- From the bottom position, explosively press the bar back up towards the starting position. Focus on squeezing your triceps at the top of the movement. The primary muscles engaged are the triceps, with secondary involvement from the chest and shoulders.
- Ensure your elbows remain tucked throughout the pressing motion.
Tips for Optimal Performance:
- Elbow Position: Maintaining tucked elbows is paramount. This ensures the triceps are the primary movers and protects your shoulder joints.
- Bar Path: The bar should travel in a slight arc towards your head, not straight down like a traditional bench press.
- Grip Width: Experiment with grip widths to find what's most comfortable and effective for your anatomy. A narrower grip will increase triceps activation.
- Range of Motion: Control the descent and avoid bouncing the bar off your chest. A controlled eccentric (lowering) phase is vital for muscle growth.
- Breathing: Inhale as you lower the bar and exhale as you press it back up.
Variations of the JM Press
While the standard JM press is highly effective, there are variations that can be used to target the triceps differently or accommodate individual needs:
- Dumbbell JM Press: Using dumbbells allows for a greater range of motion and can help identify and address strength imbalances between arms. The setup is similar, but you'll hold a dumbbell in each hand.
- EZ-Bar JM Press: The EZ-bar's angled grips can be more comfortable on the wrists and elbows for some individuals, making it a popular choice.
- Smith Machine JM Press: The Smith machine offers stability, which can be beneficial for beginners or those focusing purely on the triceps contraction without worrying about balance.
Benefits of the JM Press
Incorporating the JM press into your training routine can yield several significant benefits:
- Triceps Hypertrophy: The JM press is exceptional at stimulating muscle growth in all three heads of the triceps brachii.
- Increased Strength: By overloading the triceps through a specific range of motion, you can significantly boost your pressing strength, which translates to other compound lifts.
- Improved Elbow Health (when performed correctly): Unlike some other close-grip variations that can stress the elbows, the JM press, with its tucked elbow position, can be gentler on the joints when executed with proper form.
- Enhanced Upper Body Strength: Stronger triceps contribute to overall upper body pushing power, aiding in exercises like the bench press, overhead press, and dips.
Who Should Perform the JM Press?
The JM press is best suited for intermediate to advanced lifters who have a solid foundation in basic pressing movements and understand proper lifting mechanics. It's an excellent addition for individuals looking to specifically enhance their triceps development, whether for bodybuilding, strength training, or general fitness goals. However, individuals with pre-existing shoulder or elbow issues should exercise caution and consult with a healthcare professional or experienced trainer before attempting this exercise.
Potential Risks and How to Avoid Them
As with any exercise, there are potential risks associated with the JM press if not performed correctly:
- Shoulder Injury: Flaring the elbows out or using excessive weight can strain the shoulder joint. Keep elbows tucked and choose appropriate weight.
- Elbow Pain: An improper grip width or a sudden, jerky movement can lead to elbow discomfort. Focus on a smooth, controlled motion and find a comfortable grip.
- Wrist Strain: Using a straight barbell with a very narrow grip can sometimes cause wrist strain. An EZ-bar or dumbbells might be a better alternative if this occurs.
To mitigate these risks, always prioritize proper form over lifting heavy weight. Start with lighter weights to master the technique, use a spotter if available, and listen to your body. If you experience pain, stop the exercise immediately.
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Sources
- Triceps brachii muscle - WikipediaCC-BY-SA-4.0
- JM Press - Exercise Guidefair-use
- How to Do a Close-Grip Bench Pressfair-use
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