Training Rules
8 rules (6 hard, 2 soft)
Evidence-based constraints that guide workout generation. Hard rules are never broken; soft rules can be adjusted for experienced athletes.
Recovery
Never schedule heavy leg work within 48 hours before key running session
Fresh legs required for quality running intervals
Never schedule two recovery_cost: high sessions on consecutive days
Back-to-back high-load days compound fatigue across both running and functional systems, raising injury risk
Do not schedule more than 2 grip-intensive station sessions (ski erg, sled pull, farmer's carry, wall balls) within 48 hours of each other
Grip failure cascades across multiple stations on race day. Accumulated grip fatigue masks true station fitness in training.
Specificity
Include at least 1 session per week where running follows functional station work (combo template or simulation)
Running under fatigue is the defining Hyrox skill. A pure combo or simulation session satisfies this.
Exception: Deload weeks, base phase may use separate sessions
Volume
Long runs should be capped at 60-75 minutes
Hyrox doesn't require marathon endurance; time better spent elsewhere
Exception: Runners with marathon background may go longer occasionally
Full race simulation maximum once per month; half simulation every 2-3 weeks
Simulations are taxing; over-simulating leads to burnout
In the final 7-10 days before a target race, reduce total volume by 40-50% while keeping 1-2 short high-intensity sessions
Taper preserves fitness while clearing accumulated fatigue. Without it, athletes race on tired legs.
Intensity
Maximum 3 quality sessions (km repeats/combo workouts/simulations) per week
Hyrox quality sessions combine running and functional stress, requiring more recovery than pure running
Exception: Peak phase, experienced athletes only