Workout Description
5 Rounds for Time
10 Hollow Rocks
10 V-Ups
10 Tuck Ups
10 second Hollow Hold
1 minute Rest
Why This Workout Is Easy
While core-intensive, this workout includes built-in rest periods (1 minute) between relatively short work periods (~30-40 seconds). The movements are basic gymnastics/core exercises with no load or complex skills. The 1:2 work-to-rest ratio prevents significant fatigue accumulation, and the movements don't compound each other's difficulty. Most CrossFitters can complete this as prescribed with good form.
Benchmark Times for Durante Core
- Elite: <5:00
- Advanced: 6:00-7:00
- Intermediate: 8:00-9:00
- Beginner: >15:00
Training Focus
This workout develops the following fitness attributes:
- Stamina (7/10): High-volume core work with minimal rest tests local muscular endurance. Holding positions and repeating movements challenges midline stamina significantly.
- Flexibility (4/10): Hollow positions and V-ups require decent hip flexor mobility and thoracic extension, but movements are achievable for most.
- Endurance (3/10): The one-minute rest between rounds limits cardiovascular demand, though core fatigue builds over time. Five rounds creates moderate aerobic challenge.
- Speed (3/10): While movements can be cycled quickly, the rest periods and emphasis on position control limit the speed component.
- Strength (2/10): While core strength is required, movements are bodyweight-only and submaximal in nature. Focus is on control rather than max force.
- Power (1/10): Movements are controlled and strict rather than explosive. Focus is on position maintenance and endurance rather than power output.
Movements
- Hollow Rock
- V-Up
- Hollow Hold
Scaling Options
Reduce hollow rocks to 5 reps or substitute with dead bugs. Modify V-ups to knee tucks or partial V-ups with bent knees. Scale tuck-ups to supported tuck-ups with hands under hips. Reduce hollow hold to 5 seconds if form breaks. Can extend rest period to 90 seconds if needed. For advanced athletes, extend hollow hold to 20-30 seconds.
Scaling Explanation
Scale if unable to maintain proper hollow body position for 10 seconds, or if hip flexors fatigue prevents leg lift in V-ups. Priority is maintaining proper core engagement and spinal position throughout all movements. Target completion time is 12-15 minutes with consistent form across all rounds. Scale to preserve intended stimulus of core endurance rather than just getting through reps.
Intended Stimulus
Moderate-intensity core endurance workout targeting the anterior chain, lasting 12-15 minutes. Primary focus is on midline stabilization and core control under fatigue. Energy system is primarily oxidative with brief glycolytic demands during work intervals. Challenges both strength-endurance and movement quality maintenance.
Coach Insight
Maintain strict form throughout - quality over speed. Break up hollow rocks into sets of 5 if needed to maintain position. For V-ups and tuck-ups, focus on controlled eccentric movement. During hollow holds, ensure lower back remains pressed to ground. Use the rest periods fully - don't cut them short. Watch for form deterioration in later rounds, especially losing hollow body position or rushing transitions.
Benchmark Notes
This core-focused workout has similarities to Annie (50-40-30-20-10 double-unders + sit-ups) in terms of movement patterns and volume. Key differences:
1. Movement breakdown per round:
- 10 Hollow Rocks: 1.5s each = 15s
- 10 V-Ups: 2s each = 20s
- 10 Tuck Ups: 1.5s each = 15s
- 10s Hollow Hold = 10s
- 1 min rest = 60s
Base round time: 120s
2. Fatigue factors:
- Rounds 1-2: 120s (fresh)
- Round 3: 126s (1.05x fatigue)
- Round 4: 132s (1.1x fatigue)
- Round 5: 138s (1.15x fatigue)
3. Total time calculation:
Elite (L10): ~300s (5:00)
- Much faster than Annie benchmark due to forced rest periods
- Core movements are less taxing than double-unders + sit-ups
Intermediate (L5): ~540s (9:00)
- Slower movement execution
- More fatigue between rounds
Beginner (L1): ~900s (15:00)
- Significant rest needed between movements
- Form breakdown on hollow positions
Recap:
Male/Female (unisex workout)
L10: 5:00 (300s)
L5: 9:00 (540s)
L1: 15:00 (900s)
Modality Profile
All three movements (Hollow Rock, V-Up, Hollow Hold) are bodyweight/gymnastics movements requiring no external load or cyclical cardio. Therefore, this workout is 100% gymnastics modality.