Race Day Boost is a key part of the Race PB Kit because it’s designed for one thing: helping you show up sharper on race day—especially when intensity climbs and fatigue starts to bite.
WHAT YOU MAY NOTICE:
- Better endurance
- More time at anaerobic threshold (hold “hard” pace longer)
- Unsurpassed lactic-acid buffering (helps you resist the burn)
- Supports glycogen storage (more stored fuel)
- Gluten-free + vegan-friendly
WHAT RACE DAY BOOST DOES:
Race Day Boost is built around sodium (tribasic) phosphate, a performance ingredient that supports all three energy systems:
- Short efforts (ATP-CP)
- Hard sustained efforts (lactic/anaerobic)
- Longer endurance output (aerobic)
At the same time, it helps buffer acidity by neutralizing excess hydrogen ions—one of the main reasons high-intensity efforts feel like your legs are on fire. More buffering = more usable power before you fade.
The “8%” headline improvement in performance
In a large study on its primary ingredient, trained cyclists improved 40K time-trial performance by ~8% after using a loading protocol.
FORMULA HIGHLIGHTS:
Sodium (Tribasic) Phosphate
- Supports ATP production across all energy pathways
- Helps buffer blood/muscle acidity
- Can increase 2,3-DPG, which helps deliver more oxygen to working muscles
Malic Acid
- Helps reduce the chance of stomach discomfort
- Supports energy production (Krebs cycle support
Supplement facts
- Serving size: 1 capsule
- Servings per container: 64
- Per capsule: Sodium phosphate 500 mg
- Other ingredients: vegetable capsule, magnesium stearate
HOW TO USE:
One-day “A” race
4 days before your event:
-
4 capsules, 4 times per day (with food + water)
= 16 capsules/day for 4 days
Multi-day events
3 days before the first stage:
- 4 capsules, 4 times per day
During the event (maintenance):
- After each stage: 4 capsules with Recoverite® ASAP
- Later that day/evening: another 4 capsules with food
Sodium note
Each 4-capsule dose adds about 440 mg sodium.
Standard loading = 4 doses/day, so that’s ~1,760 mg extra sodium per day during the load.
Translation: keep dietary salt lower during the loading phase—Race Day Boost is doing plenty of the sodium already.
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