Workout Description
For Time
30 calorie Assault Bike
21 Thrusters (50/35 kg)
19 Box Jump Overs (24/20 in)
Why This Workout Is Hard
This workout combines three high-output movements that compound fatigue brutally. The 30-cal Assault Bike torches the legs and lungs before 21 thrusters at 50/35kg — a weight that demands respect even fresh, but becomes a serious grind post-bike. Box jump overs then demand explosive leg power from already-depleted quads. The continuous for-time format with no built-in rest and overlapping leg/cardio demands pushes this firmly into Hard territory.
Benchmark Times for Gary Wright
- Elite: <2:45
- Advanced: 3:10-3:40
- Intermediate: 4:15-5:00
- Beginner: >12:00
Training Focus
This workout develops the following fitness attributes:
- Endurance (7/10): The 30-calorie Assault Bike creates a significant cardiovascular demand, and the subsequent thrusters and box jump overs maintain elevated heart rate throughout, making aerobic capacity a primary driver of performance.
- Stamina (7/10): 21 thrusters at moderate load combined with 19 box jump overs require sustained muscular output across legs, shoulders, and core, demanding solid muscular endurance to avoid breaking sets under fatigue.
- Power (7/10): Box jump overs are inherently explosive, and thrusters require a powerful drive from the squat to overhead. The Assault Bike also rewards powerful pedaling, making power a significant contributor throughout.
- Speed (6/10): As a For Time workout with relatively low total reps, athletes are incentivized to push pace on the bike and cycle movements quickly. Efficient transitions and fast cycling of thrusters are critical to a competitive time.
- Strength (5/10): Thrusters at 50/35 kg represent a moderate load requiring meaningful strength, especially under cardiovascular fatigue from the bike. Not maximal effort, but strength is a limiting factor for many athletes.
- Flexibility (4/10): Thrusters demand overhead mobility and squat depth, while box jump overs require hip flexor and ankle flexibility. Moderate mobility demands that could limit performance if restricted.
Movements
- Air Bike
- Thruster
- Box Jump-Over
Scaling Options
Weight: Reduce thrusters to 35/25 kg for intermediate athletes or 20/15 kg for beginners. Box height: Scale to 20/16 in or use a step-up variation. Bike calories: Reduce to 20-22 calories if the 30-calorie effort will take longer than 3-4 minutes. Movement substitutions: Replace Assault Bike with 400m run or 30 calories on a rower. Replace box jump overs with lateral step-overs or box step-ups. Rep modifications: Consider 20 calories / 15 thrusters / 12 box jump overs for athletes newer to high-intensity work.
Scaling Explanation
Scale if you cannot perform at least 8-10 unbroken thrusters at the prescribed weight when fresh, or if the Assault Bike effort alone would take you more than 3-4 minutes. The goal is to keep this workout in the 6-12 minute window — if Rx loads or volumes push you beyond 15 minutes, you've lost the intended sprint stimulus. Prioritize intensity over load here. A lighter thruster done fast and with good mechanics will deliver far more training benefit than grinding through heavy reps with a broken squat or press. Athletes with knee concerns should substitute step-overs for box jumps to protect joint integrity without sacrificing the conditioning demand.
Intended Stimulus
This is a short, high-intensity sprint workout targeting a 6-12 minute time domain. Expect a hard, sustained effort that taxes both your aerobic engine and muscular endurance simultaneously. The primary challenge is conditioning and mental toughness — the Assault Bike opens with a lung-burning demand, the thrusters will light up your legs and shoulders, and the box jump overs require coordination when your body is already screaming. Think of this as a three-punch combo designed to leave you completely spent at the finish line.
Coach Insight
Attack the Assault Bike with controlled aggression — push hard but leave just enough in the tank to transition quickly into thrusters. Aim for a pace that feels like an 8 out of 10 effort, not an all-out sprint. On the thrusters at 50/35 kg, plan your breaks before you need them — a 12-9 or 8-7-6 split is smarter than going unbroken and dying on the floor. Drive through your heels on the squat and use your hip drive to launch the bar overhead, letting your legs do the work. For box jump overs, stay low and efficient — step down if needed to protect your legs for the next rep. Common mistakes: going too hot on the bike and having nothing left for thrusters, trying to go unbroken on thrusters at a heavy load, and bouncing too aggressively on box jumps when fatigued. Keep transitions sharp — every second counts in a workout this short.
Benchmark Notes
A 30-calorie assault bike, 21 thrusters at 50/35 kg and 19 box jump-overs. L5 (5-6 min) bikes in about 1:30 and breaks the thrusters into sets of 5-7. L10 (under 2:45) bikes near 40 seconds and goes unbroken.
Modality Profile
Three movements across all three modalities: Air Bike (M), Thruster (W - barbell with external load), Box Jump-Over (G - bodyweight movement). Each modality gets roughly 33% with rounding applied.
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