Hailey Bieber shares her better butt workout — after declaring Pilates is ‘over’
The beauty mogul's latest gym selfie revealed a little-known workout tool that's gaining traction. A fitness expert explains how the gear works — and who should use it.
Black News 
The beauty mogul's latest gym selfie revealed a little-known workout tool that's gaining traction. A fitness expert explains how the gear works — and who should use it.
