Dumbbell Lying Supination
The Dumbbell Lying Supination isolates the Forearms through a controlled range of motion. This intermediate-level dumbbell exercise builds focused strength where compound movements often fall short.
Starting position
Ending position
Muscles Worked
The forearms handles the primary load during this movement. This isolation movement keeps tension concentrated on a single muscle group.
How to Dumbbell Lying Supination
- 1
Lie sideways on a flat bench with one arm holding a dumbbell and the other hand on top of the bench folded so that you can rest your head on it.
- 2
Bend the elbows of the arm holding the dumbbell so that it creates a 90-degree angle between the upper arm and the forearm.
- 3
Now raise the upper arm so that the forearm is parallel to the floor and perpendicular to your torso (Tip: So the forearm will be directly in front of you). The upper arm will be stationary by your torso and should be parallel to the floor (aligned with your torso at all times). This will be your starting position.
- 4
As you breathe out, externally rotate your forearm so that the dumbbell is lifted up in a semicircle motion as you maintain the 90 degree angle bend between the upper arms and the forearm. You will continue this external rotation until the forearm is perpendicular to the floor and the torso pointing towards the ceiling. At this point you will hold the contraction for a second.
- 5
As you breathe in, slowly go back to the starting position.
- 6
Repeat for the recommended amount of repetitions and then switch to the other arm.
Common Mistakes
- • Focus on the mind-muscle connection — feel the target muscle working through each rep.
- • Use a controlled tempo of 2 seconds up, 2 seconds down to eliminate momentum.
- • Start with your weaker side first — match the reps on your stronger side to prevent imbalances.
- • Squeeze at peak contraction for a full second — this is where most of the growth stimulus occurs.
Similar Exercises
Frequently Asked Questions
What muscles does the Dumbbell Lying Supination work?
The Dumbbell Lying Supination primarily targets the Forearms. It's an effective isolation exercise for building forearms strength.
Is the Dumbbell Lying Supination good for beginners?
The Dumbbell Lying Supination is rated intermediate. Beginners should build foundational strength with simpler movements first, then progress to this exercise once comfortable with the movement pattern.
What equipment do I need for the Dumbbell Lying Supination?
You need dumbbell to perform the Dumbbell Lying Supination. Most commercial gyms will have this available.
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