Carrie Underwood is looking HOT on the cover of Women's Health. Her secrets:  Tabata, a Japanese form of high-intensity interval training and coconut oil! She says she uses the oil for her body, hair, and food! 

And one of the best quotes from her Women's Health issue: "I've had the same shorts for years, and I'll wear them until I can't wear them anymore. People who dress up for the gym? I don't like them."

Here she is behind the scenes for her FIT PHOTOSHOOT!

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PHOTO CREDIT: WOMEN'S HEALTH