Inputs
- A few quick answers
- Timing, training, or body cues
Outputs
- A clear target, score, or risk level
- The next action to take today
Recommended first stop
11.8 g
A conservative 0.2 g/kg test dose.
Common target dose
17.7 g
That is the most common evidence-based target once tolerance is known.
Timing window
90-150 min pre-race
A middle timing window is a practical place to start when you are not sure how you respond.
The evidence is strongest for high-intensity efforts lasting roughly 30 seconds to 12 minutes.
Start with 11.8 g in training. If tolerance is good and the use case makes sense, move toward 17.7 g.
Practice it on a hard workout that looks like the race demand you actually care about. If the gut response is poor, bicarb is not helping you.
Before using bicarb, make sure these are already locked in:
- Race breakfast and pre-race carb timing
- Hydration and sodium plan for the weather
- Post-race recovery if you are doubling back
Evidence: Strong: buffers acid buildup and is most useful for repeated or sustained high-intensity efforts lasting about 30 seconds to 12 minutes.
Dose guardrail: Common target: 0.2-0.3 g/kg, usually tested 60-180 minutes before. Always trial in training first because GI tolerance varies.
Mechanism: Sodium bicarbonate increases extracellular buffering. During hard efforts, it helps clear hydrogen ions out of the muscle faster, which can delay the drop in pH that contributes to burning and fatigue.
GI distress is the main downside. Test in training, never for the first time on race day.
If you have kidney issues, blood pressure concerns, reflux, ulcer history, or take relevant medications, use medical guidance first.
Food-first basics still matter more than any single supplement experiment.
Use this in practice
- Use the fit-check first so athletes do not treat bicarbonate like a universal race-day add-on.
- Start at 0.2 g/kg in training, then only move toward 0.3 g/kg if the gut response is manageable.
- Keep carbs, fluids, and recovery habits ahead of supplement experimentation.
Evidence Base
recovery support
Practical examples
Generate different but equivalent recovery examples while keeping the same post-workout, sleep, injury, and repair logic.
PBJ + milk recovery
Quick carbs plus protein when dinner is still far away.
Bone-support example
Useful when recovery concerns overlap with bone stress and low intake.
Sleep and recovery setup
Recovery is not just macros; it is the whole nightly routine.