Michelle Bandur is a 5-time Ironman finisher. She writes occasionally for livewellnebraska.com.

What is HIIT? It’s a type of training where you give 100 percent effort in a short period of time, followed by a short recovery period.

Nineteen endurance athletes who call themselves the "Oma-Hotties" will compete in Ironman Arizona in Tempe, Ariz. Sunday. They'll swim 2.4 miles, bike 112 miles and then run 26.2 miles before crossing the finish line.

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