Step Up or Black Out - Crossfit Workout

For time

21-15-9
Knee raises/knees to elbows/T2B
Cal Assault bike
Box jumps

2 min rest

21-15-9
DB Push press - @2x10/15 Intermediate: @2x12,5/20 RX: @2x15/22,5
Cal Ski
Weighted box step overs - @2x10/15 Intermediate: @2x12,5/20 RX: @2x15/22,5

TC: 24

workout description

"For Time – 21-15-9 x 2"

Time Cap: 24 minutes

Part 1:
21-15-9
Knee Raises / Knees to Elbows / Toes to Bar
Calories on Assault Bike
Box Jumps

Rest 2 minutes

Part 2:
21-15-9
Double Dumbbell Push Press
@2x10/15 kg
Intermediate: @2x12.5/20 kg
RX: @2x15/22.5 kg
Calories on Ski Erg
Weighted Box Step Overs
(same dumbbells)

This workout splits the challenge into two escalating sprints. The first half focuses on explosive bodyweight movement and conditioning. After a short rest, the second part hits the shoulders and legs with heavy dumbbell work and ski power. It’s a test of pacing, transitions, and mental reset between parts.

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What is a "for time" workout?

A for time workout is a classic CrossFit format where the goal is to complete a set list of exercises as fast as possible. Your time becomes your score, making each for time CrossFit workout a race against the clock — and yourself.

In a typical for time workout, you'll perform a fixed number of reps or rounds of movements (e.g., squats, push-ups, burpees, or barbell lifts) and finish them as quickly as you can while maintaining good form. This format pushes you to work hard, manage fatigue, and develop both conditioning and mental toughness.

Why Try a "For Time" CrossFit Workout?

  • Builds intensity and urgency into your training

  • Encourages better pacing, efficiency, and recovery awareness

  • Easy to track progress over time — beat your previous score!

  • Works well for individual or group competition-style workouts

Whether you're doing a short sprint or a long chipper, the for time CrossFit workout format is a powerful way to test your limits and stay motivated in your training.

What kind of exercises are in this workout?

  • Weighted Box Step-Overs

    Weighted box step-overs involve stepping laterally or forward over a box while carrying a load—typically dumbbells, kettlebells, or a sandbag. In weighted box step over workouts, this movement challenges unilateral strength, coordination, and balance under fatigue.

    In this workout, weighted box step-overs target the glutes, quads, and stabilizers while improving agility and control. The shifting angles and step height demand focus and leg drive, making this movement ideal for functional strength and conditioning. Great for building work capacity and lower-body durability.

  • T2B

    Toes to bar is a powerful gymnastics movement that targets your core, grip, lats, and hip flexors, making it a key element in many high-intensity toes to bar workouts.

    In this workout, toes to bar challenge your core strength, rhythm, and coordination while under fatigue. Whether you're kipping or going strict, it’s an essential skill for improving gymnastics capacity and midline control in CrossFit.

  • Assault Bike

    The Assault Bike is a fan-powered machine that delivers one of the most effective full-body conditioning challenges in fitness. Common in high-intensity assault bike workouts, it trains your legs, arms, and lungs all at once — and responds directly to how hard you push.

    In this workout, the Assault Bike is used to build power, stamina, and mental toughness. Whether you're sprinting for calories or holding a steady pace, the Assault Bike is perfect for intervals, finishers, or pure engine tests.

  • Box jump

    The box jump is a plyometric movement that builds explosive power, coordination, and lower body strength. It’s a key component in many high-intensity box jump workouts, often used to develop speed, agility, and stamina.

    In this workout, box jumps challenge your legs, core, and cardiovascular system, while also training quick reaction and balance. Whether performed at a moderate pace or in sprint intervals, the box jump is a powerful tool for improving athletic performance.

  • Ski Erg

    The SkiErg is a low-impact, high-intensity cardio machine that simulates double-pole skiing. It’s a favorite in many SkiErg workouts for building aerobic capacity, upper body endurance, and total-body coordination.

    In this workout, the SkiErg targets your lats, core, triceps, and legs, offering a unique way to train both power and pacing. Whether you're sprinting for calories or grinding out meters, the SkiErg delivers a serious conditioning challenge without stressing the joints.

  • knee raises

    Knee raises are a core-focused gymnastics movement that builds abdominal strength, hip flexor control, and grip endurance. Common in beginner and advanced knee raise workouts, they’re performed hanging from a pull-up bar, bringing the knees toward the chest.

    In this workout, knee raises train midline stability and coordination, making them a great progression toward toes-to-bar. Whether strict or kipping, knee raises are an effective and scalable movement for developing strong, functional core strength.

  • dumbbell push press

    The dumbbell push press is a powerful overhead movement that combines leg drive and shoulder strength to press the dumbbells overhead. Featured in many dumbbell push press workouts, it improves upper body endurance, core stability, and power output.

    In this workout, dumbbell push presses train your quads, glutes, shoulders, and triceps, making them a great choice for full-body conditioning. Whether performed single-arm or with both dumbbells, the dumbbell push press adds intensity and efficiency to any session.

  • knees to elbows

    Knees to elbows is a gymnastics-based core movement performed hanging from a pull-up bar, where the knees are driven upward to make contact with the elbows. Frequently featured in knees to elbows workouts, it trains core strength, grip endurance, and body control—all under tension.

    In this workout, knees to elbows develop midline stability, lat activation, and coordination, serving as a foundational skill for more advanced movements like toes-to-bar. They’re an effective way to build functional core strength while improving shoulder and hip mobility in dynamic settings.

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