Workout Description

Why This Workout Is Medium

This workout combines moderate volume with light-to-moderate loads and fundamental movements. The descending rep scheme (50-40-30 DUs, 20-15-12 swings) naturally reduces fatigue accumulation. Built-in 1:00 rest between rounds provides meaningful recovery. Double unders are the primary skill demand, but volume is manageable. The air bike finisher adds metabolic challenge but isn't heavy. Average CrossFitters complete as prescribed in the 21-27 min window without significant scaling needed.

Benchmark Times for Soft Reset

• Elite: <15:30
• Advanced: 17:30-19:45
• Intermediate: 22:30-25:30
• Beginner: >42:00

Training Focus

This workout develops the following fitness attributes:

• Stamina (8/10): High rep ranges across three rounds (sit-ups, swings, double unders) demand sustained muscular output. Cumulative fatigue from repeated movements tests muscular endurance throughout.
• Endurance (7/10): 21-27 minute workout with sustained cardiovascular demand from double unders and air bike intervals. Progressive intensity in round 3 with max-effort biking pushes aerobic capacity significantly.
• Speed (7/10): For-time format demands quick movement cycling and minimal transitions. Double unders and air bike require rapid cadence. Descending rep scheme encourages faster pacing as fatigue accumulates.
• Power (6/10): Double unders demand explosive wrist/ankle power and quick ground contact. KB swings require hip extension power. Air bike sprinting in round 3 adds explosive leg power demand.
• Strength (3/10): Light KB load (35/26 lb) and bodyweight movements prioritize endurance over maximal force. Swings and step-ups provide moderate strength stimulus but aren't primary focus.
• Flexibility (2/10): Basic range of motion required for double unders, swings, sit-ups, and step-ups. No extreme mobility demands or deep stretching positions needed.

Movements

• Double-Under
• Kettlebell Swing
• Sit-Up
• Box Step-Up
• AbMat Sit-Up
• Air Bike

Scaling Options

Double Unders: Sub 2:1 single unders (100/80/60) or reduce DU reps to 30/25/20 for athletes still developing the skill. KB Swings: Scale to 26/18 lb for newer athletes or those with lower back sensitivity. American swings are NOT recommended here — Russian swings are intentional to protect the shoulder under fatigue. Box Step-Ups: Keep at 20 inches for most athletes; reduce to a low step or eliminate the box entirely for those with knee issues, substituting 10 alternating reverse lunges. Sit-Ups: Sub crunches or reduce volume by 30-40% for athletes with lower back concerns. Air Bike: Scale time to 0:30 each round if 45/60 seconds is too daunting, or sub 200m/150m row. Volume: For newer athletes, reduce to 2 rounds total or cut all rep counts by 25%. Target time remains 21-27 min — adjust scaling to hit that window.

Scaling Explanation

Scale if you cannot complete 30 consecutive double unders, cannot perform 10 unbroken KB swings at Rx weight with solid hip hinge mechanics, or if your lower back rounds during swings under fatigue — that is a hard stop. Prioritize technique over load every time, especially on the KB swing where a compromised hinge under fatigue is a real injury risk. The sit-up volume (60 total reps) accumulates quickly — athletes with existing lower back issues should reduce reps or substitute a more spine-friendly movement. The goal is to finish each round feeling like you worked hard but could have pushed slightly more — if you're redlining in Round 1, you've gone too fast. The structured rest between rounds is a gift — use it to recover, not to collapse. Athletes should be moving within the first 30 seconds of each new round. If you're consistently finishing outside the 27-minute window, reduce volume rather than sacrificing movement quality.

Intended Stimulus

This is a moderate time-domain workout (21-27 min with rest) designed to build aerobic capacity and muscular endurance across varied movement patterns. The descending rep scheme creates a psychological and physical arc — you open fast, settle into a controlled middle round, then dig deep for a hard finish. The energy demand is a sustained hard effort, not a sprint, requiring you to manage output across three distinct rounds separated by structured rest. The primary challenge is pacing discipline and mental toughness — resisting the urge to blow out Round 1 and having enough left to push the air bike hard in Round 3. Secondary challenges include hip hinge mechanics under fatigue (KB swings) and maintaining core engagement through accumulating sit-up volume.

Coach Insight

Round 1 is labeled 'fast opener' but treat it as controlled-fast — not all-out. The 50 double unders should be unbroken or one quick break max. KB swings at 35/26 lb should be crisp and powerful, done in 1-2 sets. Box step-ups are your active recovery — breathe here. Round 2 is your reset round — shorter reps on the rope and swings, but the air bike at moderate pace means honest effort, not coasting. Lock in a sustainable RPM and hold it for the full 45 seconds. Round 3 is where you earn it — 30 DUs should be fast, swings unbroken, and that 60-second air bike should be the hardest minute of your day. Pace the bike at 85-90% effort, not a sprint you can't sustain. Key technique cues: on KB swings, drive hips through aggressively and let the bell float — don't muscle it with your arms. On sit-ups, anchor your feet and use a controlled descent to protect your lower back under fatigue. Common mistakes: going too hard on Round 1 DUs and tripping repeatedly, treating the air bike as rest, and losing hip hinge mechanics on swings as core fatigue accumulates from sit-up volume.

Benchmark Notes

Double unders and air bike pacing are the primary limiters; KB swings and sit-up volume add cumulative fatigue across rounds. L5 (~27 min) represents a median CrossFitter who can string double unders in sets, manages KB swings unbroken, and holds a moderate air bike pace with brief transitions.

Modality Profile

Double-Under, Sit-Up, AbMat Sit-Up are Gymnastics (3). Air Bike is Monostructural (1). Kettlebell Swing and Box Step-Up are Weightlifting (2). Total: 6 movements. G: 3/6=50%, M: 1/6=17%, W: 2/6=33%.