In reply to Robert Durran:
No, it might be about marginal gains for elite performers who have already exhausted any more fruitful areas of potential improvement. But for 99% of people the limiting factor in their performance isn’t their chalk brand or their choice of near identical electrolyte drink.
This isn’t a Tour de France frontrunner trying to gain an extra .005% reduction in air resistance. It’s a load of teenagers buying a fashionable drink for the perceived status it gives them. It’s about marketing, profit and group identity, not “marginal gains”. Same goes for the chalk.
Post edited at 12:21