Plenty of athletes, such as Therese Johaug, have been suspended from sport based on the concept of "strict liability": they are responsible for any prohibited substance which enters their body. The IOC has forgone that principle in dealing with Jamaican sprinters at the 2008 Olympics.
There are few sports that can challenge the intensity of cross-country skiing, but cycling is one of them. Anyone who has ever pedaled a road bike uphill–which includes almost all cross-country skiers–can appreciate the difficulty of the Tour de France, and as such, we decided to get some perspective on the race from Canadian Olympian Devon Kershaw. Kershaw himself is no stranger to the bicycle–Carlos Barredo-style? DK: Haha, Barredo was classic. Using the wheel for...