Of all the questions surrounding reports of a Russian curler's alleged doping infraction at the Pyeongchang Olympics, the biggest is why?

Why would an athlete in one of the Winter Games' least taxing and least physically demanding sports feel it necessary to use performance-enhancing drugs?

Even curlers taking part in the Olympic competition were left scratching their heads on Monday as news circulated that Alexander Krushelnitsky, an Olympic Athlete from Russia who won a bronze medal in the mixed doubles with his wife Anastasia Bryzgalova, is suspected of testing positive for meldonium, a banned substance that increases blood flow, improves exercise capacity and is favored by endurance athletes.