Workout Description

Why This Workout Is Medium

This workout features a favorable work-to-rest ratio (15 seconds work, 2 minutes rest) that allows substantial recovery between efforts. The Echo Bike sprint is a high-intensity, anaerobic effort, but the 2-minute rest window is sufficient for most average CrossFitters to recover adequately. Seven rounds of short sprints with ample recovery is manageable without significant fatigue accumulation. The limiting factor is anaerobic capacity, not endurance or skill, making this accessible to the average athlete.

Training Focus

This workout develops the following fitness attributes:

• Power (9/10): 15-second all-out sprints on the echo bike are purely explosive efforts. Maximum power output is the primary demand for each interval.
• Speed (8/10): Sprinting requires rapid leg cycling cadence and quick acceleration. Minimal transitions between efforts; focus is on explosive speed.
• Endurance (7/10): Seven 15-second sprints with 2-minute recovery intervals test cardiovascular capacity and aerobic power. The extended rest allows some recovery but repeated efforts demand sustained cardiac output.
• Stamina (3/10): Each sprint is brief (15 seconds), limiting muscular endurance demands. Recovery periods are generous, preventing significant fatigue accumulation across rounds.
• Flexibility (1/10): Seated cycling position demands minimal range of motion. No complex movement patterns or mobility requirements present.

Movements

• Air Bike

Scaling Options

This workout is highly accessible and rarely needs significant modification. For beginners: reduce to 5 rounds instead of 7 to manage neuromuscular fatigue while still hitting quality efforts. If the Echo Bike is unavailable, substitute an Assault Bike, ski erg, or rower — all maintain the sprint stimulus. For athletes with lower body injuries, the ski erg is the preferred sub as it shifts load to the upper body. Keep the 15-second duration and 2-minute rest unchanged regardless of substitution — the work-to-rest ratio is the core of this workout. Advanced athletes can extend to 8-10 rounds if 7 feels insufficient, but only if wattage remains consistent.

Scaling Explanation

Scale volume (rounds) if an athlete is newer to sprint intervals or has limited aerobic base — the intensity of each effort should never be scaled down. If an athlete cannot sustain near-maximal effort due to joint pain, injury, or equipment limitations, substitute the movement but keep the time and rest structure identical. The priority here is absolute intensity over volume. An athlete doing 5 rounds at 100% effort gets far more out of this workout than someone doing 7 rounds at 70%. Signs to scale: wattage dropping more than 20% by round 3, inability to recover heart rate below ~150 BPM before next sprint, or any joint discomfort on the bike. Target output: athletes should feel like they gave everything on each sprint and are grateful for the rest.

Intended Stimulus

Pure sprint power and neuromuscular output. This is a phosphocreatine and anaerobic alactic workout — 7 all-out 15-second efforts with generous 2-minute rest periods. The goal is maximum wattage on every single sprint, not cardiovascular endurance. Think of each interval as a standing broad jump for your legs — explosive, violent, and fully recovered before the next one. The 2-minute rest is intentional and should allow near-complete recovery so each sprint can be performed at or near 100% effort. Primary challenge is mental: committing to true max effort every round when your brain wants to pace.

Coach Insight

The only strategy here is NO strategy — go as hard as humanly possible from the first pedal stroke on every round. Treat each 15 seconds like it's the only one you have. Seat height should be set so legs reach near full extension at the bottom of the pedal stroke for maximum power transfer. Drive through the entire pedal stroke — push down AND pull up if using straps. Stay seated and keep your torso slightly forward to engage glutes and hamstrings. Track your wattage or RPM each round — you should see minimal drop-off across all 7 rounds if you're resting properly. A common mistake is treating this like a conditioning piece and pacing the first few rounds. Another mistake is cutting the rest short — use the full 2 minutes. If your watts drop more than 10-15% by round 4, you went out too hard or didn't rest enough.

Modality Profile

Air Bike is a cyclical cardio movement, classified as Monostructural (M). It is a stationary bike used for aerobic conditioning and endurance work.