OKOBOJI, Ia. — RAGBRAI cyclists will not only have to beat the hills, they’ll also have to beat the heat Monday and Tuesday.

The National Weather Service has issued a heat advisory for the western two-thirds of the state, with high temperatures are expected to reach the 90s. The most oppressive heat and humidity are expected Tuesday afternoon and evening, forecasters said.

“Drink lots, and lots, and lots of water,” said Bob Libby, medical director for the Register’s Annual Great Bicycle Ride Across Iowa.

Libby recommended that cyclists find a shady spot and hydrate if the heat becomes overbearing. They should also drink as much water as they’re thirsty for, but take care not to overdo it as well.

He warned that alcohol increases dehydration.

Beating the afternoon heat is how Lynn Pfeil, 54, of Lancaster, Pa., plans to stay cool.

“I might try to leave earlier,” Pfeil said Sunday night. “Get up really early and try to hit the road earlier.

Veteran cyclist James Tingley, 36, of Avondale, Ariz., said that the heat was not a worry.

“This is my fifth year riding, so I’ve seen hotter days,” Tingley said. “For me, it’s not a big deal.”

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