Pilates is having a big moment, and one Houston studio is putting a twist on the trend with "Happy Hour Pilates." • The Montrose studio is designed with a Tulum-inspired vibe, making clients feel like they’ve stepped into a mini getaway right here in Houston. • Happy Hour Pilates offers group classes on the Cadillac reformer machine, something not commonly found in Pilates studios. Williams says only about five studios in the country offer that experience in a group setting.