Hey, Runatic!
Over a long distance, a shirt rubs the same patch of skin thousands of times. Minor friction can gradually become painful chafing. Sweat and wet fabric can make it worse.
That's why a runner's kit may include nipple covers, skin-safe tape, and anti-chafing products. Moisture-wicking clothing can also help reduce the risk. Cleveland Clinic explains
Chafing runs a loyalty program: each individual step seems harmless.
Amsterdam runs today. The marathon starts at 9:00 a.m. local time. Runners start and finish in the Olympic Stadium and pass through the Rijksmuseum's passageway along the route — quite literally through the museum. Marathon schedule