(CNN) — On any given morning, as the sun peeks over the horizon, Danielle Johnson can be found crawling down the hallways of her Rochester, Minnesota, home.
It may sound bizarre, but Johnson crawls every day to strengthen her core muscle groups.
"You can crawl in many ways. You can crawl on your hands and knees. You can also prop up on your toes and just hover, one or two inches above the ground, which is really going to pull in those core muscles and work those muscles effectively," said Johnson, a physical therapist at the Mayo Clinic Healthy Living Program.
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