Endorphin offers the largest diversity of instructor-led group fitness and yoga classes in Denver. From gentle and restorative yoga to the most challenging indoor cycling and high intensity functional training classes in the country. We have something for everyone, at any level of fitness.

We believe everyone needs to be part of a community that supports, encourages and inspires a healthy lifestyle. Through a diverse offering of yoga, challenging workouts, and optimal nutrition consultation, we are giving you all the tools, resources and guidance needed to improve your health and well-being.

Chris Lindley

Founder & Fitness Instructor
Chris is the founder and owner of Endorphin, a cutting-edge functional fitness, indoor cycling, crossfit and yoga chain with 11 Colorado locations. Chris leads the Public Health and Environment Department for Eagle County. He has been a certified fitness trainer for over 19 years and has additional certifications from the Mountain Tactical Institute, MovNat, CrossFit, Schwinn, RealRyder International, ACE and Fast-Twitch.

Nick Spinosa

Fitness Instructor
Nick's positive approach and passion about health and fitness is evident throughout his life – whether you attend a class that he is teaching or stop to talk to him on the street. Nick has been involved in fitness and sports for the majority of his life, and studied Kinesiology (human movement) in college while playing three different sports. Nick looks forward to helping others reach their goals through hard work, a positive mindset, and consistency.

Briana Constance

Yoga Instructor
Briana is a yoga teacher ERYT 500, a cycling teacher, fitness coach, and CEO of Endorphin studios. She been teaching yoga since 2004, and cycling/fitness since 2009, Briana is a teacher who will support and challenge you no matter what stage of your journey you are at in the moment. She teaches to help others see what they are capable of and help dissolve perceived limitations on and off the mat.

Paige Milstein

Manager, Cycling & HITT Instructor
Paige is manager of Endorphin's LoHi and Ryders studios, as well as teacher and co-director of the Cycling and Hiit programs at Endorphin. Paige infuses every class she teaches with fun and tons of energy. You will always leave her classes tired and happy! Paige approaches to fitness as a whole life endeavor, coming from her own personal journey of transformation to health after college, and when she's not teaching you will find her crushing obstacle races or enjoying outdoor Colorado Adventures.