A few weeks ago, I went to an Endurance Pilates & Yoga class with Blog and Tweet Boston. Endurance Pilates & Yoga opened in January 2015 in the South End (close to Flour and Jaho). Founder Julie Erickson brings over 20 years of experience (including four Pilates certifications and an Ashtanga yoga certification) to this new studio location. The studio offers group Pilates classes and private lessons on the mat, reformer, and Cadillac, as well as barre, TRX, vinyasa yoga, and HIIT classes. The variety of classes suits all types of fitness enthusiasts. Julie is an avid runner, and I appreciated that she knows how to build strength and flexibility to…