If you haven’t been exercising for some time but you want to get your fitness back on track, signing up for a Pilates class is a great place to start. Pilates, after all, is a low-impact workout that’s slow and steady and utterly adjustable to whatever physical condition you’re in right now.

Developed by Joseph Pilates, Pilates is a whole system of exercises designed to, among other things, boost strength, and improve muscle tone, flexibility, and balance. Pilates’ entire approach to physical fitness is founded on several principles. Familiarize yourself with the following Pilates Principles, and you will be better prepared for your first Pilates class.