I've been practising both mat and Reformer Pilates on and off for over a decade, and I'm nothing if not a traditionalist. When it comes to finessing the OG moves, you had me at roll up.

One Reformer class can cost upwards of £30 ... forward Side plank and hip lift with the roller under the feet Ab roll up with roller under the feet Reverse plank with the hip twist and knee ...

"The Pilates roll up is a classical mat based exercise ... is more mobility through my back as a whole - in my weekly reformer class, I'm able to rotate my torso further and more easily than ...