I seem to get the one urge that I need to constantly fight too. Currently my best time is 3 minutes, and the urge kicks in at around about 2 minutes on a good attempt, but sometimes at around 1:30.
Is this just a case of me not being particularly tolerant to the CO2 currently, and will this improve with practice, or is it likely to be something I'm just stuck with?
Thanks,
Matt
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