Katie Thompson catches her breath during repetitions of sit-ups in high intensity interval training, also known as HIIT, at HIIT Fitness in East Sacramento on Monday.
Katie Thompson catches her breath during repetitions of sit-ups in high intensity interval training, also known as HIIT, at HIIT Fitness in East Sacramento on Monday. José Luis Villegas jvillegas@sacbee.com
Katie Thompson catches her breath during repetitions of sit-ups in high intensity interval training, also known as HIIT, at HIIT Fitness in East Sacramento on Monday. José Luis Villegas jvillegas@sacbee.com

Health & Fitness

High intensity interval training: Into the red zone and back again

May 04, 2016 10:00 AM

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