Mountain Climbers — start position
Start
Mountain Climbers — end position
End

Legs / Beginner / Compound (multi-joint)

Mountain Climbers

An explosive bodyweight exercise for the quads, with the chest, hamstrings and rear delts assisting.

At a glance

Primary
Quads
Secondary
Chest, Hamstrings, Rear delts, Hip flexors
Equipment
Bodyweight
Movement pattern
Anti-extension (brace), Hip flexion, Jump / plyometric
Level
Beginner
Type
Legs, Compound (multi-joint), Explosive

How to do it

  1. Begin in a pushup position, with your weight supported by your hands and toes. Flexing the knee and hip, bring one leg until the knee is approximately under the hip. This will be your starting position.
  2. Explosively reverse the positions of your legs, extending the bent leg until the leg is straight and supported by the toe, and bringing the other foot up with the hip and knee flexed. Repeat in an alternating fashion for 20-30 seconds.

Common mistakes

  • ✗ Hips bouncing high and shoulders behind the hands.

    Why it hurts: The wrists and shoulders take uneven loads and the core stops stabilising.

    ✓ Instead: Keep the shoulders stacked over the wrists and the hips level; speed up only when the form holds.

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Muscles worked

Neck (Front)Upper traps (Front)Front delts (Front)Side delts (Front)Chest — secondary (Front)Serratus anterior (Front)Biceps (Front)Forearms & grip (Front)Abs (Front)Obliques (Front)Hip flexors — secondary (Front)Quads — primary (Front)Adductors (Front)Shins (tibialis) (Front)Calves (Front)Outer shins (peroneals) (Front)Feet (arch & toes) (Front)Neck (Back)Upper traps (Back)Upper back (rhomboids, mid/lower traps) (Back)Rear delts — secondary (Back)Side delts (Back)Rotator cuff (Back)Lats (Back)Lower back (erectors) (Back)Triceps (Back)Forearms & grip (Back)Hip abductors (glute med) (Back)Glutes (Back)Hamstrings — secondary (Back)Adductors (Back)Calves (Back)
FrontBack
  • Primary: Quads
  • Secondary: Chest, Hamstrings, Rear delts, Hip flexors

Best for

How specific this exercise is to each movement.

Photos and instructions: free-exercise-db (github.com/yuhonas/free-exercise-db), public domain.