Saucony Endorphin Speed 4 vs. Endorphin Trainer | Which to Choose?

GET YOUR DOR MERCH! Our store is now LIVE: https://doctors-of-running.myspreadshop.com/ SHOP all our the team's favorite gear at our DOR Running Warehouse page! (affiliate link) https://www.runningwarehouse.com/catpage-DORPP.html?from=docrun Find us on social! https://www.facebook.com/doctorsofrunning https://www.instagram.com/doctorsofrunning/ https://twitter.com/DoctorsRunning https://www.linkedin.com/company/doctors-of-running/ We are a group of physical therapists and runners interested in the art and science of running shoes. Learn more by visiting doctorsofrunning.com #saucony