Workout Description

Why This Workout Is Easy

This workout is minimal in both volume and complexity. Fifty single unders take roughly 45-60 seconds and require no skill beyond basic coordination. Ten calories on the Assault Bike is a brief 30-45 second sprint effort. There's virtually no cumulative fatigue — the two movements don't interfere with each other, and total work time is under 2 minutes. Nearly any CrossFitter can complete this without scaling.

Training Focus

This workout develops the following fitness attributes:

• Speed (7/10): At this low volume, the clear stimulus is speed. Fast rope cycling and hard sprinting on the assault bike are required to maximize output in minimal time.
• Power (5/10): The assault bike rewards explosive leg drive and arm push-pull, and single unders require rhythmic, quick ground contact. Sprint-style output elevates power demand.
• Stamina (3/10): Low rep count and short assault bike effort limit muscular endurance demand. The legs and arms engage briefly but not long enough to accumulate significant fatigue.
• Endurance (2/10): Very short bout of work with only 50 single unders and 10 calories; insufficient volume and duration to meaningfully stress cardiovascular endurance systems.
• Strength (1/10): No loading involved. Single unders and the assault bike require minimal force production. This is almost entirely a light, unloaded effort.
• Flexibility (1/10): Single unders and the assault bike require only basic range of motion. No deep positions, overhead demands, or mobility-intensive movements are present.

Movements

• Air Bike
• Single-Under

Modality Profile

Two movements across two modalities: Single-Under is Gymnastics (jump rope bodyweight coordination skill) and Air Bike is Monostructural (cyclical cardio). With one movement per modality, the split is 50/50.