Workout Description
4 rounds for time of:
12 Knees-to-elbow
9 Box Jumps, 60/50 cm
6 Wall Balls, 9/6 kg
Why This Workout Is Medium
This workout combines moderate volume (36 total reps) with light-moderate loads and fundamental movements. The 4-round structure creates manageable fatigue accumulation. KTE demands core/grip endurance, box jumps require power but allow brief recovery, and wall balls are light (9/6kg). The continuous format without built-in rest is challenging, but the rep scheme and movement selection allow most average CrossFitters to complete as prescribed within 12-15 minutes without significant scaling.
Benchmark Times for Knee-d for Speed
- Elite: <5:00
- Advanced: 6:00-7:00
- Intermediate: 8:15-10:00
- Beginner: >20:30
Training Focus
This workout develops the following fitness attributes:
- Power (8/10): Box jumps are highly explosive. Wall balls require powerful hip extension and shoulder drive. Knees-to-elbow demands dynamic core power. Three of three movements emphasize explosive force production.
- Stamina (7/10): 36 total knees-to-elbow, 36 box jumps, and 24 wall balls challenge muscular endurance across multiple muscle groups. Cumulative fatigue from repeated movements tests sustained output capacity.
- Speed (7/10): For-time format demands quick movement cycling and minimal transition time. Moderate rep ranges allow sustained pace without full sprint intensity. Pacing strategy significantly impacts completion time.
- Endurance (6/10): Four rounds of continuous work with minimal rest demands sustained cardiovascular output. The moderate volume and intensity create aerobic demand without reaching marathon-level endurance stimulus.
- Strength (4/10): Box jumps and wall balls require moderate force production, but loads are submaximal. Knees-to-elbow is primarily bodyweight. Not a strength-focused workout despite explosive movements.
- Flexibility (4/10): Knees-to-elbow demands hip and shoulder mobility. Wall balls require overhead range. Box jumps need ankle and hip flexibility. Moderate mobility demands without extreme ranges required.
Movements
- Knees-to-Elbow
- Box Jump
- Wall Ball
Scaling Options
Knees-to-elbow: scale to hanging knee raises (bring knees to hip height) or toes-to-rings for those with limited lat engagement or grip strength. Reduce reps to 8-10 if grip is a major limiter. Box jumps: reduce height to 50/40 cm, or substitute step-ups at the same height for athletes with knee concerns or poor landing mechanics — keep the same rep count. Wall balls: reduce load to 6/4 kg, or lower the target height. Reduce reps to 4-5 per round if cycling is very inefficient. For a full volume modification, consider 3 rounds instead of 4 for newer athletes.
Scaling Explanation
Scale the knees-to-elbow if you cannot complete at least 6 unbroken hanging reps with controlled movement — kipping wildly through all 12 reps each round will destroy your grip and risk shoulder strain. Scale box jump height if you cannot land softly with flat feet and full hip extension at the top, or if you have any Achilles or knee issues. Scale wall ball load if your squat depth or ball trajectory breaks down by round 2. The priority in this workout is continuous movement — an athlete doing scaled movements and finishing in 12-16 minutes is getting a far better stimulus than someone going Rx and grinding through 20+ minutes with long rest breaks. Target completion time is 10-18 minutes for all athletes, regardless of scaling level.
Intended Stimulus
This is a moderate-intensity conditioning piece targeting the 10-18 minute time domain. Expect a sustained aerobic effort with short bursts of higher output — classic 'hard sustained effort' territory. The primary challenge is conditioning and midline endurance, as the knees-to-elbow will tax your grip and core progressively each round. The low rep counts per movement are designed to keep you moving continuously with minimal rest, so the stimulus lives in the transitions and accumulated fatigue across all 4 rounds.
Coach Insight
The key to this workout is protecting your grip and core on the knees-to-elbow so the box jumps and wall balls remain crisp. Start round 1 at 70-75% effort — it will feel easy, and that's intentional. For knees-to-elbow, consider breaking into 7+5 or 6+6 from round 2 onward rather than going unbroken and burning out your grip early. On box jumps, use a consistent step-down strategy to protect your Achilles and conserve power — only rebound jump if you're very confident and fresh. Wall balls at 6 reps should be unbroken every round; if you're dropping the ball here, you've gone out too hot. Common mistake: burning through round 1 unbroken on everything, then falling apart by round 3. Keep transitions under 10 seconds and breathe deliberately between movements.
Benchmark Notes
Knees-to-elbows grip fatigue accumulating over 4 rounds is the primary limiter; box jumps and wall balls (at relatively light loading) sustain aerobic demand. L5 (~11 min) breaks K2E 8+4, jumps all 9, and cycles wall balls unbroken with short rests between movements.
Modality Profile
Knees-to-Elbow is a gymnastics movement (bodyweight core work). Box Jump is a gymnastics movement (bodyweight plyometric). Wall Ball is a weightlifting movement (external load - medicine ball). With 1 gymnastics movement and 2 weightlifting movements out of 3 total, the breakdown is G: 33%, W: 67%, M: 0%.