Trainer Spotlight: Jenn Koscelnik


Meet Denver GAIN Trainer, Jenn Koscelnik:

Why did you become a personal trainer?

I have always been interested in sports and athletics. In high school I wanted to be an athletic trainer but circumstances prevented me from pursuing that dream. 4 years ago I quit my job and went back to school to study Exercise Science. Having always struggled with my weight personally, I wanted to help others reach their goals by sharing my success story. Since I’ve been there, I can easily relate to the struggles my clients face – this goes not only for weight loss, but also in athletics as I race triathlon, cycling, and have played softball for over 30 years.

Favorite way to stay fit:

Anything outdoors. Cycling is my primary form of cardio, and I love lifting heavy weights with my iPod so I’m in my own world at the gym.

Typical Breakfast:

I’m constantly on the go in the morning, running to early clients and classes. I need something quick and easy, but also healthy and satisfying. I’m a shake girl, and my go-to is an Isagenix IsaLean Pro shake–it has a great macro makeup with protein, carbs, and healthy fats.

Guilty Pleasure:

Pizza from a mom and pop place that knows how to make it right!

Favorite way to stay fit on vacation:

Our vacations usually revolve around physical activity – camping so we can hike, bike, or kayak. This Christmas we’re going to Breckenridge to snowboard and snowshoe.

If you had to choose only one piece of exercise equipment to use, what would it be? TRX – It can go anywhere, is lightweight to carry, and provides a total body workout.

Cardio or Weights?

Both – they benefit the body in different ways, and you need both of them.

Which fitness myths bother you the most?

“Fat turns to muscle” – Fat does NOT turn into muscle! They are totally different things.

“Calories in, calories out”  – It’s a little more complicated than that. What you eat impacts your success more than counting calories; not all calories are created equal.

Favorite part of your work:

Seeing my clients succeed and reach their goals. They motivate and inspire me more than they know!

Favorite meal to cook:

Homemade chicken fajitas with lots of bell peppers and onions in corn tortillas with a mango peach salsa and avocado.

Best Nutrition Advice:

Eat clean 80% of the time (real food or food with ingredients you can pronounce and recognize), give yourself a chance to indulge once in a while in a special treat, and make it a lifestyle, not a diet.

Want to train with Jenn? Email for an introduction!

How to Conquer Those Early Morning Workouts


  1. Drink a cup of coffee: this caffeine will give you an energy boost to help you power through your workout. You may also want to eat a little snack to make sure you don’t get light headed and faint
  2. Set your clothes out the night before: Having clothes set out next to your bed will make sure you don’t waste any time in the morning looking for a pair of socks, favorite sports bra, etc
  3. Make it a date: schedule your morning workouts with friends so you are less likely to bail because you are too tired or just don’t feel like it
  4. Personal Trainer: having a personal trainer there to hold you accountable for your workouts could be key to never missing that morning workout before work
  5. Boost your metabolism: working out first thing in the morning jumpstarts your metabolism and allows you to burn more calories throughout the day

Trainer Spotlight: Darius Johnson

Meet Darius: Denver GAIN Trainer whose fitness does not stop at the gym.


Why did you become a personal trainer?

When I was growing up I loved playing all kinds of sports and have always been very competitive. I soon learned that if I paid close attention to my fitness and nutrition this could help boost my athletic performance. I always had great experiences with my strength and conditioning coaches and I knew that the impact they had on me, I would like to have on others.


B.A. Exercise and Sports Science – Western State Colorado University

Certified Personal Trainer – National Academy of Sports Medicine (NASM)

Certified Corrective Exercise Specialist – NASM

TRX Tactical Level 2

Favorite way to stay fit:

I really love working out with my clients because they end up enjoying it a little bit more because they appreciate that I’m working out with them. But I enjoy multiple forms of exercise and in a variety of settings.

Motivational Quote:

Philippians 4:13 – I can do all things through Christ who strengthens me.

Typical Breakfast:

Most of the time, for breakfast, I eat oatmeal with brown sugar, raisins, and coconut shavings.

Guilty Pleasure:

I love me some Pound Cake and BBQ Ribs!

Favorite way to stay fit on vacation:

When me and my family take vacations we always try to plan something that involves physical activity like a hike. A couple weeks ago we stayed in Glenwood Springs, here in CO, and we hiked to Hanging Lake. It was so beautiful and so worth our time.

If you had to choose only one piece of exercise equipment to use, what would it be?

I would easily answer that with the TRX. The TRX allows you to exercise in practically in any environment. Outside, at home, in your gym, and in your hotel room if you travel, are all great places that you can efficiently get a great full-body workout with the TRX. And if you use it correctly by managing the amount of rest time in between each exercise, you can accomplish get a great workout in a small amount of time.

Cardio or Weights?

I prefer resistance training if I have to choose one. However, both are absolutely necessary for me to maintain my fitness level.

Which fitness myths bother you the most?

“Can you help me lose fat only in my butt?” There is no such thing as “Spot Reduction.” Even a woman that is pregnant will tell you how she got to a point where her wedding ring couldn’t fit. When you gain weight you gain it everywhere and when you lose weight you will lose everywhere also…

Favorite part of your work:

Honestly, the favorite part is that I can really have a lasting positive impact on someone’s life that could benefit them for the rest of their years.

In June, I participated in NASM’s Corrective Exercise Specialist Workshop. And a book I recently read that I would recommend to anyone even current trainers, Fitness or Fiction written Brent Brookbush. Look that guy up online he is a super stud!

Favorite meal to cook:

Salmon, Asparagus, brown rice. Easy and quick to make and very nutritious.

Favorite place to workout:

I love 24 Hour Fitness because there are so many people in there that care about their fitness and it is wonderful to be in an environment like that, at least I think so.


Want to train with Darius? Email for an introduction!