Workout Description

Why This Workout Is Easy

Max Double Unders is a single-movement skill test with no external loading, no time pressure forcing pace, and a natural stopping point when the athlete trips. The limiting factors are coordination and jump rope endurance, not strength or high cardiovascular output. Calves and shoulders may fatigue in longer sets, but the effort is self-regulated. For the average CrossFitter who has double unders, this is low-stress and easily completed.

Training Focus

This workout develops the following fitness attributes:

• Stamina (8/10): Calves, shoulders, and wrists must sustain hundreds of rapid, repeated contractions without rest. Muscular endurance in these smaller muscle groups is the primary limiter in a max effort set.
• Speed (8/10): Fast rope cycling is essential — the rope must complete two full rotations per jump. Coordination, quick wrist speed, and precise jump timing are critical determinants of a high score.
• Endurance (6/10): Sustained double under effort elevates heart rate significantly. A long max set demands continuous aerobic output from the cardiovascular system, especially as the set extends into the hundreds of reps.
• Power (4/10): Each jump involves a small but rapid calf-driven push-off, and rope speed demands quick wrist turnover. Power is repetitive and submaximal rather than a single explosive effort.
• Flexibility (2/10): Requires basic wrist mobility for rope rotation and ankle mobility for the jump. No extreme range of motion needed, though tight shoulders or stiff ankles can disrupt rhythm and timing.
• Strength (1/10): No meaningful strength demand. Movement relies on a light jump rope and bodyweight calf raises. Maximum force production is essentially irrelevant to double under performance.

Movements

• Double-Under

Modality Profile

Double-Unders is a single movement classified as Gymnastics — it is a bodyweight jump rope coordination skill. With only one movement and one modality, it is 100% Gymnastics.