Well, a mat, of course! The 34 original Contrology exercises developed by Joe Pilates are now simply known as Mat Pilates - and are done on a mat, as the name implies. You can do the exercises standing and I'll try to provide videos for those variations as well (I am still searching for versions off Instagram...).
If you do want to do the mat exercises closer to the original design, you do want a mat. You could get The Mat, based on Joe's original design, though those are pricey. Like 500-600€. 😮 And more. (See here, for example: pilatesscandinavia.com/prod... ).
If you're like me, you probably don't want to spend that kind of money, so what mat might you want to get? If you're just wanting to follow March MATness you can get away with a yoga mat. Preferably two as you might want more padding for the rolling exercises. If you're looking for a new mat anyways, buy a thicker one. I bought an OLIVER exercise mat that's about 1 cm thick at the beginning of lockdown and it has served me well (not sure if they're sold in the U.K., here's a source in Germany: sportlaedchen.de/marken/oli... . This might be a comparable option: amazon.co.uk/Yoga-Mat-Thick... )
And if you don't want to go shopping and still want to get into the spirit, you can watch this interview with John Howard Steel by one of my favorite Pilates teachers Beth from Trifecta Pilates (who is hiding her lastname very well...): youtu.be/mDphjxVXnX4
Steel was a student of Pilates himself and he shares his experience with the exercises and with the man as well as some of his historical research. You'll quickly learn that there is a lot of mystery around Pilates, the man.
Or if you'd rather walk or run while listening to an interview, check out Darian Gold's interview with historian Eva Rincke in two parts: podcasts.apple.com/gb/podca... and podcasts.apple.com/gb/podca... (or search for "All Things Pilates" on your fav podcast app. Just be careful! She has a lot of fascinating interviews on that podcast 😉).
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★ March MATness summary page: healthunlocked.com/strength... ★