Welcome to Flex Friday with Tiffany Rothe! 💪🏾 This dynamic full-body workout will leave you toned, strong, and energized in just minutes. Whether you're looking to lose belly fat, tighten your ...

As Mary Kirasich straps into the Glute Flex, pulling down the safety bar and clipping metal rings to stay in place, she looks as though she’s buckling in for a ride on a raging roller coaster. But ...