I own three pairs of toning shoes. I've noticed when I wear them for long periods of time, my hip and left knee ache. I switch to flat bottom shoes, the pain goes away.

Watch your step! A new report finds toning shoes are sending more people to the doctor’s office or even the ER.

Research from Consumer Reports finds complaints to the Consumer Product Safety Commission about injuries from toning shoes have been popping up – 36 in the past two months alone. Most of the problems are minor – things like tendinitis and foot, leg, and hip pain. But there were also 15 reports of broken bones, some requiring surgery.

Medical experts say because toning shoes have rocker-style bottoms designed to cause instability (to engage muscles not normally used while walking) that might also lead to turned ankles, bad falls, and other injuries if you are not extra careful.

More From KOOL 101.7