Posted On: September 16th 2026, 02:16 am
1st rule of BiCarb: nothing new on race day.
2nd rule of BiCarb: NOTHING NEW ON RACE DAY.
3rd rule: if you haven’t trialled it at rest, in training, and in a C-race, you don’t take it in an A-race.
The AIS Sport Supplement program runs every supplement through three questions: is it safe, is it effective, is it permitted?
BiCarb is a Group A supplement. It has strong scientific evidence for use in specific situations in sports.
2-3% performance gain in:
* 1-10 minute maximal efforts - 1500m running
* Repeat sprint efforts - cx or crit racing
* Sustained hard hour that HYROX is built on.
BiCarb also comes with nausea, cramps, diarrhoea, vomiting.
A HYROX athlete went viral this week for what happened mid-race. The whole conversation is about hygiene. Nobody is asking whether it was bicarb.
The AIS four-phase protocol exists specifically to filter this out. Phase 1 prep. Phase 2 trial at rest. Phase 3 trial in training. Phase 4 trial in a C-race. Any A-race dose comes after all four.
If you saw the video and thought “gross,” you missed the point. What you saw is what happens when a Group A supplement meets Phase 4 without Phases 1-3.