Mountain Climber
The Mountain Climber primarily works the Iliopsoas, Rectus Abdominis, Rectus Femoris, with secondary activation of the Anterior Deltoid, Pectoralis Major (Sternal) and stabilizer support from the Serratus Anterior, Transverse Abdominis, Triceps (Long Head). It is a bodyweight compound exercise at beginner difficulty.
The Mountain Climber is a beginner compound exercise requiring no equipment, following a lunge movement pattern. It primarily targets the Iliopsoas, Rectus Abdominis, Rectus Femoris, with secondary engagement of the Anterior Deltoid, Pectoralis Major (Sternal). This is a bilateral pushing movement, meaning both sides work together to generate force.
In a plank position, alternate driving your knees toward your chest rapidly.
| Equipment | Bodyweight |
|---|---|
| Difficulty | Beginner |
| Type | Compound |
| Movement | Lunge |
| Force | Push |
| Laterality | Bilateral |
| Primary | Iliopsoas, Rectus Abdominis, Rectus Femoris |
| Secondary | Anterior Deltoid, Pectoralis Major (Sternal) |
Muscles Worked
The Iliopsoas, Rectus Abdominis, and Rectus Femoris are the primary movers, collectively driving the movement and absorbing the greatest share of the load. The Anterior Deltoid, and Pectoralis Major (Sternal) act as secondary movers, assisting the primary muscles and contributing meaningfully to the overall output. The Serratus Anterior, Transverse Abdominis, Triceps (Long Head) act as stabilizers, maintaining joint position and postural alignment throughout the movement.
Primary Muscles
- Primary Muscle Iliopsoas (hip_flexors)
- Primary Muscle Rectus Abdominis (core)
- Primary Muscle Rectus Femoris (quadriceps)
Secondary Muscles
- Secondary Muscle Anterior Deltoid (shoulders)
- Secondary Muscle Pectoralis Major (Sternal) (chest)
Stabilizer Muscles
- Stabilizer Muscle Serratus Anterior (chest)
- Stabilizer Muscle Transverse Abdominis (core)
- Stabilizer Muscle Triceps (Long Head) (triceps)
How to Perform
Preparation
- Stand with feet together.
- Position body with proper alignment.
Execution
- Step forward and lower body until front thigh is parallel to floor.
- Drive through front foot to return to starting position.
- Repeat.
Comments
- Maintain control throughout movement to fully engage the Rectus Femoris, Iliopsoas, Rectus Abdominis.
Tips & Common Mistakes
- Keep your front knee tracking over your ankle, not caving inward.
- Maintain an upright torso and avoid excessive forward lean.
- Step out far enough that your rear knee can lower close to the floor.
Programming Suggestions
Adapt your sets and reps to your training goal. As a beginner-friendly exercise, start with lighter loads and focus on form before progressing weight.
| Strength | 3–5 sets × 3–6 reps at 80–90% 1RM with 2–4 minutes rest. |
|---|---|
| Hypertrophy | 3–5 sets × 6–12 reps at 65–80% 1RM with 60–120 seconds rest. |
| Endurance | 2–4 sets × 15–20 reps at 50–65% 1RM with 30–60 seconds rest. |
Alternative Exercises
These exercises target the same primary muscles (Iliopsoas, Rectus Abdominis, Rectus Femoris) and can be substituted based on your equipment or variation preferences.
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