Summer Sides

Founder, GXunited
Lecturer of Exercise Science, MSU Denver

Summer Sides (MS, CSCS) is a self-proclaimed exercise science geek. She loves exploring human movement and finding ways to help people stand taller, move easier, and perform better. Her training methodology includes a mixture of movement pattern training, yoga philosophies, Pilates technique, and aerobic endurance training.

Her fitness career began over 15 years ago and has provided her with some great opportunities to train athletes, create certifications and CEC courses, and teach group exercise classes. These days she focuses on fitness education as a full time Lecturer of Exercise Science at Metropolitan State University of Denver and the Founder of GXunited.

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6 Reasons to Take a Sick Day as a Fit Pro

Sometime its better to just stay at home instead of hacking a lung out during class.
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Exercise Science for Fit Pros: Understanding Muscle Anatomy

Head spin a little bit when thinking about anatomy? Well here is Anatomy 101 made simple!
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5 Benefits of Yoga for Cyclists

Through the practice of yoga, cyclists can decrease muscular imbalances, which improves riding abilities and reduces injury. Here are 5 benefits of a yoga practice for cyclists.
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Exercise Physiology is Fun! Understand Your Cardiovascular System

Your heart beats, your lungs breath, and muscles work for you - but do you understand how all this happens? Get a quick science review and master technique!
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5 Reasons to be a GX Participant Again

One group ex instructor shares 5 tips learned when stepping off the stage and back into the class as a participant. Check out to discover ways to be better.
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Remember What it Feels Like to Be a Beginner: Inside My Story

We all fail. We all make mistakes. It's about how we learn from these mistakes and use them to fuel our passion that makes us successful. Hear my story...
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Improve Posture & Reduce Lower Back Pain in Group Fitness Classes

6 Tips to improve posture among group exercise participants that focus on building posterior chain strength, stability & mobility, and kinestetic awareness.
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Understanding the Group Fitness Athlete

Rethink your definition of an athlete and look at your group exercise class as a team of 5 different types of athletes.
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“Oh Sh*t” Moments as a Group Fitness Professional

After 15 years of teaching group exercise I've got my share of horror stories. Here are 6 stories of how I created my own personal nightmare within a class.
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Creating Active Dynamic Warm-Ups for any Workout

Stop messing around, and learn the 6 layers of an active dynamic warm-up to actually prep your team for activity.
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4 Tips for Longevity as a Fitness Professional

Our bodies get tired, need rest, and need fuel just like everyone else.
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Understand the Science to Create Great HIIT Workouts

High intensity training is great, until it is isn't! Learn the science of how and why to train max effort intensities.
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Fun Times at Aqua & Sports Camp

These past 10 days at swim and sports camp have been super awesome!
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Is Social Media Killing the Fitness Professional?

Has the ability to become "fitness famous" through social media caused a decline in legit fit pros and consumer awareness about educated professionals?
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5 Tips to Support Group Fitness WallFlowers

Group exercise can be a bit intimidating for a new person, support those who want to hide in the back with these 5 simple tips.
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11 Tips for Teaching What You Love By Saying NO

Saying NO is difficult, especially when we love what we do as group exercise pros. Here are 11 tips for saying no and only teaching what you love.
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Fit Pros: Be the “Go To” Substitute

I jump at the chance to get in and sub a class and you should too!
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3 Tips for Motivating Small Group Fitness Classes

Schedules change and life happens, how do you react when class sizes start to dwindle? Inspire those who are there versus being upset about those who aren't.
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Tips for Avoiding Group Exercise Instructor Nightmares

Avoid the tech horror shows that HAUNT the group fitness instructor with the 'fit pro survival kit'.
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Teaching Tip: Make Your Calendar Explode in Color!

From one crazy fit pro to another: Keep yourself organized to avoid showing up at the wrong gym by color coding your calendar.
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Dance Research – Let’s Geek out on the Exercise Science!

Did you know that ballet dancers have the same cardiovascular demands soccer players, distance runners, and gymnasts? Read more in this research review.
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Let’s Demand Better Group Fitness: Breaking Down Cliques

It's time to break down the divide amongst the group exercise community, eliminate the cliques, fight for change in order to UNITE in our mission of fitness
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Making a Yogi out of Anyone: 2 Flows for Any Class

Everyone can benefit from yoga, here are 2 flows that any fitness professional can incorporate into workouts to build strength, balance, and flexibility.
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25 Tips for Success as a Group Fitness Instructor from Team GXunited

Team GXunited is filled with some pretty amazing fit pros. Here they share some of the best tips they received from those mentors that crafted the instructor you see today.
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The Importance of Microphones, Windscreens, & Mic Belts for Group Fitness Instructors

AV systems are vital for group fitness instructors. Save your voice with a microphone. Keep the equipment safe with a windscreen and microphone belt pack.
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15 Tips from an Instructor’s Experience as a ClassPass Participant

15 things an instructor learned as a ClassPass participant for one month, attending classes in 3 states and 15 studios.
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Everyone is Watching – Reactions Matter

"Sh*t happens". It's about how you react in the moment that matters to the participants in your group exercise classes. Discover if you're Mariah or Jimmy?
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The Down and Dirty History of Barre Fitness

Barre fitness workouts shape and tone the body using principles of ballet and dance technique, functional strength training, and yoga/pilates. But did you know that the original format had a much sexier undertone? Learn more about Lottie Berk and the original barre fitness!
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23 Music Resources for Group Fitness Professionals

Discover where to find licensed, edited, and group fitness ready music to play in classes and avoid any music piracy issues for you and your club. 
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GXunited is New & Improved – Announcing our New Brand & Website

The dreams and realizations of GXunited are getting bigger and bolder every year. This includes our brand identity and our website. Discover what changes were made and how we got to our new look.
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BREAKING NEWS! Stages® Indoor Cycling is Announced as Les Mills New Global Bike Partner

On June 6, 2018 Les Mills and Stages Indoor Cycling released an announcement of a global partnership. This is big news for our industry!
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Foster a Growth Mindset in Your Group Fitness Classes

Coach your participants in a way that fosters letting go of stories that no longer serve them. Understand different mindsets and the fear of failure complex.
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Fit Pros: How to Stay Calm when Teaching

As a group exercise professional we can often beat ourselves up when things go wrong. Here are a few tips for helping you overcome those inner dialogues.