Workout Description

Why This Workout Is Medium

Total volume is 420 reps (210 push-ups, 210 sit-ups). Using the framework: Density = (420 × 0.5) ÷ 35 min ≈ 6 units/min → 20 pts. Movement Complexity averages 20 (basic). Time Domain (30+ min typical for many) = 75 pts. Base Score = (0.4×20) + (0.3×20) + (0.3×75) = 36.5. Ascending/descending ladder modifier ×1.2 → 43.8. Final rating: Medium.

Benchmark Times for Blackjack

• Elite: <12:48
• Advanced: 14:24-16:00
• Intermediate: 17:36-19:12
• Beginner: >33:08

Training Focus

This workout develops the following fitness attributes:

• Stamina (9/10): High-rep pressing and trunk flexion demand significant muscular endurance. The limiter is often push-up stamina; athletes must manage sets to avoid failure and maintain steady sit-up output.
• Endurance (6/10): Sustained, steady work for 30–45 minutes taxes aerobic capacity, especially as push-up breaks lengthen. Breathing control and consistent pacing are key to avoiding long rest periods later in the workout.
• Speed (3/10): Early rounds can move quickly, but fatigue slows push-ups. Smooth transitions and short breaks matter more than sprint cycling speed here.
• Flexibility (2/10): Basic ranges of motion for push-ups and sit-ups. Adequate shoulder and hip extension/flexion help with comfort and consistency but extreme mobility isn’t required.
• Strength (1/10): No external load and no maximal force requirement. The challenge is volume, not peak strength, and athletes succeed through repeated submaximal contractions.
• Power (1/10): Movements are non-explosive. Success relies on repeatable, controlled reps rather than quick power outputs or dynamic lifting.

Movements

• Push-Up
• Sit-Up

Scaling Options

Scale to: incline or knee push-ups + full sit-ups • reduce ladder to 15→1 push-ups/1→15 sit-ups • 20-minute cap with quality push-up reps (strict to elevated to knees as needed)

Scaling Explanation

These options preserve the push-up stamina stimulus and total volume intent while adjusting difficulty so athletes keep moving and maintain solid mechanics.

Intended Stimulus

A steady, grindy bodyweight test. Early rounds should feel controlled and almost easy; later rounds bite as push-up stamina fades. Aim for consistent, manageable sets with minimal rest. Keep sit-ups moving continuously while protecting push-up capacity. The best scores come from disciplined pacing and avoiding push-up failure.

Coach Insight

Pace from the start. Break push-ups into small, sustainable sets before you have to. Sit-ups should be near-unbroken with calm breathing. The one tip: Never hit push-up failure—stop 2–3 reps shy and keep rests short and timed. Common mistakes: opening too big on push-ups, sloppy standards, and long, unplanned rest between movements.

Benchmark Notes

Blackjack totals 210 push-ups and 210 sit-ups across 20 alternating sets. The old explanation calculated about 625 seconds even for elite athletes, then adjusted the top target down to 6 minutes. The male curve uses about 12 minutes for L10, 20 minutes for L5, and 35 minutes for L1.

Modality Profile

Both movements are gymnastic bodyweight tasks with no monostructural cardio or external loading. The entire session is driven by upper-body pressing and midline endurance, so the modality is purely gymnastics in nature.

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