Solidcore, stylized by the brand as [solidcore], is a boutique fitness class that takes place on a custom-built reformer.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Meet the experts:Triana Brown is a coach and the director of product development and talent at Solidcore.

Thanks to the cult-favorite workout studio's first celebrity campaign, its 50-minute workout regimen has generated even more buzz in recent weeks. By Stacia Datskovska If you purchase an independently ...