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Dumbbell Lying Supination

A intermediate strength exercise for the forearms, done with a dumbbell.

Dumbbell Lying Supination: starting positionDumbbell Lying Supination: finishing position
Main muscles
Forearms
Equipment
Dumbbell
Level
Intermediate
Type
Isolation
Movement
Pull

How to do the 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.

Sets and reps

Muscle3–4 sets of 10–15 reps, rest 60–90 seconds
Pump or finisher2–3 sets of 15–20 reps, rest 45–60 seconds

Log every set in MyoStats and it works out your estimated one-rep max and suggests the next weight or rep target, so you keep progressing without guessing.

Alternatives to the Dumbbell Lying Supination

Questions

What muscles does the Dumbbell Lying Supination work?

Mainly the forearms.

Is the Dumbbell Lying Supination good for beginners?

It's rated intermediate. Beginners can build up to it with Palms-Down Dumbbell Wrist Curl Over A Bench first.

What can I do instead of the Dumbbell Lying Supination?

Good alternatives that train the forearms: Dumbbell Lying Pronation, Seated One-Arm Dumbbell Palms-Down Wrist Curl, Palms-Down Dumbbell Wrist Curl Over A Bench or Palms-Up Dumbbell Wrist Curl Over A Bench.

How many sets and reps of the Dumbbell Lying Supination should I do?

Muscle: 3–4 sets of 10–15 reps, rest 60–90 seconds. Pump or finisher: 2–3 sets of 15–20 reps, rest 45–60 seconds.

Exercise steps and photos: free-exercise-db (public domain).