While this is completely up to your personal preference, we can suggest a few best practices for what to wear while training on the RX:Generally opt for comfortable exercise clothes.Slim-fitting leggings or shorts work well on Reform RX. Avoid long or flowing clothes, especially anything that could potentially become caught in the sliding carriage (use your own best discretion on this.)We recommend wearing Pilates grip socks for comfort and traction. Long hair should be tied up.