How Your Cycling Guide Keeps You Safe Without You Noticing

Halfway up Hai Van Pass, a 58-year-old accountant from Melbourne starts showing signs that something’s wrong.
She’s flushed, but it’s hot—everyone’s flushed. Her cadence has dropped, but it’s a climb—everyone slows down. What the guide notices is subtler: her hands keep drifting to her temples. She’s swaying slightly on the bike.
The guide doesn’t announce anything. He doesn’t make a scene. He just rides up beside her and says, “Beautiful spot for a photo break, yeah? Let’s pull over.”
Within three minutes, she’s in the air-conditioned support van with ice water and a wet towel on her neck. Within thirty minutes, her core temperature has dropped, her headache is fading, and she’s annoyed at herself for “not being tough enough.”