Mad Dogg Athletics Trademarked the phrase “Spin” (together with “Spinning” and “Spinner”) inside the early nineteen nineties; the organization is protective of its utilization. We use the generic time period “indoor biking” regularly during this guide, Though many people who are into this kind of training use “Spin” or “Spinning” https://advertisesmart.com/view/post/How-to-Relieve-Sciatica-with-Targeted-Exercises/96