Upward Spiral Studio
Pilates @ Green Street


(617) 491-2940


We are located at Green Street Studios in Central Square, Cambridge.

The oldest certified Pilates studio in all of Massachusetts, we are a fully equipped studio, offering classical Pilates, both mat and private instruction. We also offer instruction in the GYROTONIC EXPANSION SYSTEMŪ and the GYROKINESISŪ exercise method. We hope that this site will provide you with some preliminary information about our studio. Click on any of the icons above to learn more or email Martha Mason for more information or call into the studio.

Click Here for group classes


Click on the image to read the article in American Fitness by Kate Wilson about how Pilates with Martha Mason has changed her life.