T he fire hydrant exercise has been around at least since the days of Jane Fonda workout tapes, but it's not just your mama's ...

“A fire hydrant exercise is a fundamental part of fitness that you can tweak and adjust to find what works for you, and what you enjoy including in your routine.” The exercise requires coming ...

For the workout session, Bieber opted for a black ... In the video she posted on Instagram Story, Hailey Bieber does the fire hydrant exercise as she lifts one of her legs to the side at a time ...