Core exercise, concentration and centering – if you practice Pilates, you’re probably familiar with these ideas. For those who aren't so familiar, Pilates is a strengthening workout that also helps with flexibility and endurance. While some forms of Pilates use an apparatus, others simply consist of mat exercises. What they have in common is a focus on the body’s core muscles – abdominals, lower back, hips and thighs (aka. The Powerhouse).