Muscle-Up
Primary muscles: Latissimus dorsi · Pectorals · Triceps · Biceps · Core
Overview
The muscle-up combines a pull and a push into one continuous movement, and is an iconic advanced exercise in CrossFit. Performing a pull-up and a dip back to back demands functional strength and coordination from the entire upper body.
There are two forms: the ring muscle-up and the bar muscle-up. The instability of the rings recruits more stabilizing muscles in the ring muscle-up, while the bar muscle-up is performed on a fixed structure, so the path is relatively set.
The heart of the movement is the transition. The hardest moment is at the top of the pull, when you must rotate over the rings or bar into the starting position of a dip. As the elbows pass above the bar or rings, the wrists rotate and you transition into the dip position.
CrossFit often uses the kipping muscle-up, where swing momentum helps with the transition phase. Still, without a base of at least 10 strict pull-ups and 10 dips, this can cause serious injury to the shoulders and elbows.
Achieving a muscle-up is recognized in the CrossFit community as a milestone — "getting your first ring muscle-up" — and it opens a path to more complex ring movements such as the ring HSPU and ring L-sit.
Step-by-step
Grip setup
Grab the rings or bar at shoulder width and start from a dead hang.
Explosive pull
Contract the lats hard and pull the chest quickly above the rings/bar.
Transition
As the elbows pass over the rings/bar, rotate the wrists and move into the dip position.
Dip press
From the dip start position, press up until the arms are fully extended.
Finish position
The arms are fully extended and the body is supported stably above the rings/bar.
Technical Standards
Grip the rings/bar with a false grip or a normal grip
At the top of the pull, the elbows move above the rings/bar
During the transition the wrists rotate naturally into the dip position
Complete the dip: press up until the arms are fully extended
Keep the core braced throughout every phase
On ring muscle-ups, keep the rings close to the torso (no excessive outward flare)
Common Faults
Failed transition: the elbows cannot get above the rings/bar and the movement stalls
Chicken wing dip: one arm locks out before the other, creating an asymmetrical movement
Insufficient pull height: not pulling high enough before the transition makes it impossible
Excessive kipping: relying on momentum without base strength damages the shoulders
Scaling
Banded ring muscle-up — loop a resistance band on the rings to help lift the hips through the transition. Or practice box muscle-ups with the feet on the floor.
Chest-to-bar pull-up + separate ring dip training — strengthen the two movements individually, then practice transition drills.
Strict muscle-up — perform it with no swing, using pure strength, to maximize both ring stability and strength.
WODs featuring this movement
Amanda
Sub-10 min (Elite), Under 15 min (Competitive)
Ryan
Sub-20 min (Elite), Under 30 min (Competitive)
Holleyman
Under 40 min (Elite), Under 55 min (Competitive)
Jason
Under 20 min (Elite), Under 30 min (Competitive)
26.3
For Time (10-min cap)
25.3
AMRAP 10 min (score: completed reps)
24.4
For Time (20-min cap)
24.2
For Time (20-min cap)
23.5
AMRAP 10 min (score: completed reps)
22.5
AMRAP 20 min (score: completed reps)
22.4
For Time (20-min cap)
21.5
For Time (7-min cap)
19.5
AMRAP 20 min (score: completed reps)
19.3
For Time (10-min cap)
18.3
AMRAP 14 min (score: completed reps)
17.3
AMRAP 8 min (score: completed reps)
17.2
AMRAP 12 min (score: completed reps)