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Send us Fan Mail While I was running a 12-hour, overnight trail race in Highlands Ranch, Colo. in 2024, I got a hamstring cramp that forced me to walk until I could get it to go away. In the middle of the night, when it was fairly cool. What the heck! I started to think afterwards about the number of times I’d been impaired by muscle cramps over the course of 35-plus years of races. At mile 30 of the Leadville Trail 100. At mile 22 of the Lost Dutchman Marathon in Arizona when I was on BQ pac...

