Brick Session

Definition

A brick session is a training method where two disciplines are performed back-to-back with minimal or no rest between them. Originating from triathlon training, the term describes the heavy, "brick-like" feeling in your legs when transitioning from one movement pattern to another. In HYROX^® preparation, a brick session typically pairs a running segment with a station exercise - such as a 1 km run immediately followed by sled pushes - to replicate the unique fatigue pattern athletes experience on race day.

How It Works

Brick sessions train the neuromuscular system to perform under accumulated fatigue. When you run for 1 km and then immediately begin wall balls, your body must rapidly shift from a cyclical, aerobic movement pattern to a power-endurance movement under load. This transition stresses multiple energy systems simultaneously: the aerobic system remains elevated from running while the muscular system must generate force for the station work. Over time, the body adapts by improving lactate clearance, enhancing neuromuscular coordination during fatigue, and increasing mental tolerance for discomfort during transitions.

The physiological benefit comes from training the exact metabolic crossover that occurs 8 times during a HYROX^® race. Heart rate remains elevated between disciplines, forcing the cardiovascular system to support both running economy and station-specific muscular endurance concurrently.

Benefits for HYROX^® Athletes

• Race-specific adaptation: HYROX^® is essentially 8 brick sessions in sequence. Training this way builds the exact fitness you need.
• Faster transitions: Athletes who train bricks regularly shave 10-30 seconds per transition by eliminating hesitation and wasted movement.
• Improved lactate tolerance: Sustained effort across modalities trains the body to clear lactate more efficiently at race-relevant intensities.
• Mental preparation: Brick sessions teach you to start station work when your legs feel heavy and your heart rate is elevated - exactly what race day demands.

How to Apply It

Frequency: 1-2 brick sessions per week during the build phase of your periodization plan. Reduce to 1 per week during peak phase.

Structure options:

• Mini brick: 1 km run + 1 station exercise at race weight (20-30 min total)
• Double brick: 1 km run + station A + 1 km run + station B (40-50 min)
• Full simulation: 4 x (1 km run + station), covering half the race (60-75 min)

Intensity: Run segments at race pace or slightly below (RPE 7-8). Station work at race weight and target rep speed. Rest only as long as your race-day transition would take (15-30 seconds).

Sample Training Application

Wednesday Brick Session (Build Phase, Week 6):

• Warm-up: 10 min easy jog + dynamic stretches
• Round 1: 1 km run at 5:00/km pace → 30 wall balls (6 kg/9 kg)
• Round 2: 1 km run at 5:00/km pace → 200 m farmers carry (2 x 16 kg/2 x 24 kg)
• Round 3: 1 km run at 5:00/km pace → 1,000 m row at 1:55/500 m pace
• Cool-down: 10 min easy jog + stretching
• Total time: ~55-65 minutes

HYROX^® Context

Brick sessions are the single most HYROX^®-specific training method available. Every HYROX^® race consists of 8 sequential brick sessions: run 1 km, complete a station, repeat. Athletes who only train running and strength separately often experience significant performance drops during their first race because they have never practiced the run-to-station transition under fatigue.

Schedule brick sessions during the build phase (6-12 weeks before race day) and maintain one per week through peak phase. During tapering, reduce brick volume by 40-50% but maintain intensity to keep the neuromuscular patterns sharp. On race day, the transitions will feel familiar rather than shocking.

FAQ

How is a brick session different from a circuit workout? A circuit workout rotates through multiple exercises with short rest. A brick session specifically pairs two sustained-effort disciplines (like running + a full station) to simulate the transition fatigue unique to HYROX^®. The running component and the duration of each element are what distinguish it.

Can beginners do brick sessions? Yes, but scale appropriately. Start with shorter runs (500 m) and reduced station volume (half reps or lighter weight). The goal is to practice the transition, not to bury yourself. Build volume over 4-6 weeks before attempting race-simulation bricks.

How many brick sessions should I do per week? One to two during the build phase is optimal. More than two increases injury risk and impairs recovery. Quality matters more than quantity - one well-executed brick session beats three sloppy ones.

Track your brick session times and transition splits with ROXBASE to identify which run-to-station combinations need the most work.