About Us

Pillars of Fitness

1

Cardiovascular Endurance

The ability of the heart and lungs to adjust to and recover from the effects of whole body exercise.

2

Body Composition

The amount of fat mass compared to amounts of lean muscle mass, bone and organs.

3

Flexibility

The capacity of each joint to move through a full range of motion.

4

Muscular Strength

The amount of force a muscle can produce for a maximal 1 rep.

5

Muscular Endurance

The ability of the muscles to perform continuous submaximal force with out fatiguing, or a sustained contraction for a period of time.

Why Green Door Fitness?

Because we strive to be energy independent and to get outdoors.

We are working on becoming a certified Green Business through the city of Denver, we recycle, reuse, and try to reduce our waste by using cloth towels and our own water bottles. We don’t have paper cups or paper towels.

Our motto is We workout hard at Green Door so you can play outdoors! We will have a calender of events posted at the gym and would love to get your ideas on the calender too!

To us physical fitness is the ability to carryout daily tasks with vigor and alertness, without undue fatigue and with ample energy to enjoy leisure time pursuits and to meet unforeseen emergencies. Put easier we want our workouts at Green Door Fitness to be challenging and harder than anything you have in your daily life. So when life happens you are ready! That creates a sense of ease and enjoyment when you are playing with your family, walking the dog, or when tragedy strikes and you need to run for help. We want you to be prepared for anything, which means being Green Door Fit!

Expertise Trainers'' alt=

Our Expertise

Over-Delivering Personal Service (100%)

Weight Loss (90%)

Cleanliness (99%)

Building Great Relationships (99.9%)

Fun Friendly Environment (98%)

"Matt is one of the finest human beings kindest souls and motivating and creative individuals I have ever met. He has made it his life's journey to study the human body and is an expert on nutrition fitness as well as mind and body spirit. He has a very unique approach and is always a positive and motivating influence on his clients."

~ A. Wilson
  • team member

    Matthew Hammel - Owner / Trainer

    Matt is a native Coloradan who grew up in Denver. His first passion was football but a hamstring injury forced him to pursue other avenues for his love of physical challenges. In 2001 he graduated from Adams State College in Alamosa with a degree in Exercise Physiology. In 2001 he obtained his personal training certificate from ACE and is also a certified massage therapist.

    Besides helping his clients meet their own physical and health goals, Matt loves running, mountain biking, and hiking. He’s climbed 46 of Colorado’s 56 fourteeners with his dog, Sasha. Always seeking a new challenge, he is currently training to rock climb the wall in Yosemite National Park.

    Matt loves to share his love of the outdoors with his wife and daughter. He’s currently teaching his six-year old daughter, Luna, to ski. "One thing I’ve learned," he said, “is if you don’t take care of yourself, you can’t take care of others.” Being healthy is wealthy!

    Read their interview +

    Where are you from?: Lakewood Colorado
    What are your fitness certifications?: Ace Certified Personal Trainer/Group Trainer and Nutrition Specialist, Kettlebell Certified, Spartan Certified, TRX RIP and Suspension Trainer Certified
    Where did you go to school?: Adams State College
    What is your favorite sport?: Football
    What is your favorite color?: GREEN
    What is your favorite exercise?: Power Cleans
    What is your hobby outside of exercise?: Family time
    Where is your favorite place you've been?: Todos Santos with Maree and Luna. Listening to the waves crash and playing in a 5 ft pool with them
    What is your specialty?: Working towards total fitness for any age. I find myself in creating the perfect plan for you to follow and succeed in your fitness goals
    What is your spirit animal?: Wolf
    What is your cheat food?: Chocolate! Anything chocolate will do. Especially baked goods with chocolate!
    What is your favorite joke?: What did the 0 say to the 8?..... Nice belt.
    What is your favorite funny memory?: After a wonderful trip to Italy with Maree and Luna I ask Luna, "What was your favorite part of the trip?" She answers back, "Our layover in Miami".
    What is your most embarrassing moment?: Having to give my first speech in speech class and finding out after the class from my friends that I had my pants on backwards!
    What is your proudest moment?: Opening Green Door Fitness with all of my friends and family around to be a part of it and share in it with me.
    What is your dream vacation?: A safari in South Africa with Maree and Luna. We will then go to Seal Island to watch the Great White Sharks feed. WOW! That will be cool!
    What is your fitness goal?: To always be ready for anything. I strive to be close to peak performance always. When an adventure, race or life happen -which they always do- I'm more than ready!
    What is one thing no one knows about you?: I don't like sparkling water at all! Gross!

  • team member

    Madeleine Rae Hartman - Trainer

    Madeleine is a former yoga teacher and trainer from Minnesota, who is excited to help everyone reach their goals.

    Read their interview +

    Where are you from?: Minneapolis, MN
    What are your fitness certifications?: Registered Yoga Teacher - Vinyasa (344 HR), Yin (40 HR), & Aerial Yoga (45 HR) w/ 13 years practice experience, 5 year teaching experience.
    Where did you go to school?: The Yoga Center of Minneapolis, The Unnamed Yoga Project & Atherial Yoga, Barre & Aerial Fitness.
    What is your favorite sport?: As far as watching I enjoy the X-Games, acrobatic Olympic gymnastics & competitive dance performances.
    What is your favorite color?: Purple
    What is your favorite exercise?: I love dancing, aerial yoga, aerial arts/circus classes, aerial group fitness, acro yoga, handstand & other arm balance play/conditioning, biking & running, Pilates, HIIT, vinyasa flow & power yoga - to name a few - I also enjoy full body fitness strength training.
    What is your hobby outside of exercise?: Making costumes, cooking, singing, sketching & painting, reading, meditation, traveling, hiking, game nights, movie watching & spending time with my finance, loved ones & my kitty.
    Where is your favorite place you've been?: Road tripping Ireland was amazing, Germany - particularly Garmisch Partenkirchen - Athens, Greece was fun, road tripping Iceland was so cool & Maui’s relaxing beaches & snorkeling with tropical fish was unreal
    What is your specialty?: Yoga - Yin, Aerial & Vinyasa. Proper alignment, engagement & form
    What is your spirit animal?: Deer - see my half sleeve
    What is your cheat food?: I don’t really believe in “cheat” foods, I believe in eating a balanced variety of mostly clean, unprocessed wholesome foods & I allow space for chocolate/dessert each day. If I absolutely had to choose though I’d say rich pastas.
    What is your favorite joke?: I don’t really have a favorite joke but I love weird, dorky, nerdy & goofy humor
    What is your most embarrassing moment?: Let’s just say that all of my time in middle & high school was one long embarrassing moment
    What is your proudest moment?: Overcoming trauma by practicing yoga whilst choosing to learn to love myself in order to become self possessed & confident in order to put myself out into the world despite any fears/social anxieties & perceived limitations I may face
    What is your dream vacation?: Japan is next on the list - I also think it’d be cool to visit the space station
    What is your fitness goal?: To gain enough strength/muscle to support my joints to prevent further injuries/issues within them & to be adept in the acrobatic & aerial practices I love so much. I want to be strong, athletic & capable.
    What is one thing no one knows about you?: I’ll never tell - A girl’s gotta have her secrets

    team member

    Kyle Friedman - Trainer

    Kyle is a trainer from Chicago who is excited about encouraging people to reach there goals.

    Read their interview +

    Where are you from?: Chicago area, on the north side.
    What are your fitness certifications?: Ace Certified Personal Trainer, Bachelor's in Exercise Science.
    Where did you go to school?: Indiana University. Go Hoosiers!
    What is your favorite sport?: I love to play Football. Also basketball, but I'm pretty average at it.
    What is your favorite color?: That Green door fitness shade of Green.
    What is your favorite exercise?: I love circuits with a healthy mix of cardio and heavy weights.
    Where is your favorite place you've been?: I've been to Spain twice this year. I really like the whole country, especially Madrid.
    What is your specialty?: Functional fitness & performance for sports.
    What is your cheat food?: Any sort of Chocolate + fruit dessert combo.
    What is your favorite joke?: I'm more of a riddle guy (ask me for one) !
    What is your most embarrassing moment?: I was leading 200 people in bingo and I printed the wrong bingo cards. I was the real winner that day
    What is your proudest moment?: My proudest fitness moment was breaking 15 feet in pole vaulting (high school)!
    What is your dream vacation?: To sail around the world.
    What is your fitness goal?: Right now it is to train for general all purpose fitness. I like to be decent at all things, but not looking to be super specified in one area.
    What is one thing no one knows about you?:

  • team member

    Grace Savoca - Trainer

    Ask Grace for her intro when you see her!

    Read their interview +

    Where are you from? I am from Denver, Colorado. 
    Where did you go to school? I am currently in highschool and go to Regis Jesuit High School.
    What is your favorite sport? My favorite sport is Volleyball.
    What is your favorite color? My favorite color is orange but also any colors that are in the sunset. 
    What is your favorite exercise? My favorite exercise is probably back squats. 
    What is your hobby outside of exercise? I like being outdoors doing things like hiking, camping, or water skiing.
    What is your favorite place you’ve been? I have a few but one of my top favorites was the top of my first 14er, Mount Sherman because it was extremely beautiful and rewarding. 
    What is your spirit animal? My spirit animal is a giraffe because they see life from a different point of view.
    What is your cheat food? I don’t know if I would call it a “cheat food” because I believe everything in moderation if you are healthy about your eating habits but if I had to choose it would be ice cream.
    What is your favorite joke? I am not really a joke person but I can be sarcastic.
    What is your most embarrassing moment? I also work at an italian restaurant and one of my most embarrassing moments is dropping a pizza in front of the customers when I was bringing it to them. 
    What is your proudest moment? My proudest moment is probably having a 4.0 GPA because I have worked very hard to get good grades.
    What is your dream vacation? My dream vacation would be to backpack through Europe or take a long road trip and go to many places. 
    What is your fitness goal? My fitness goal is to stay healthy and strong as I get older and to keep up with my fitness habits throughout college.
    What is one thing no one knows about you? I don’t know if there is a lot people don’t know about me. But one thing is that I am severely dyslexic. I am a pretty out in the open person so if you want to know anything just ask me!



  • team member

    Brett DeBoy - Trainer

    Brett is from Baltimore and is happy to help anyone reach their goals

    Read their interview +

    Where are you from?: Baltimore, MD. No it’s not ALL like the Wire.
    What are your fitness certifications?: I am a certified ACE Personal Trainer. I also have an extensive background in sports and recovery.
    Where did you go to school?: THE University of South Carolina! Go Cocks!
    What is your favorite sport?: Rugby by a mile.
    What is your favorite color?: Garnet…or purple?
    What is your favorite exercise?: Definitely back squats. Leg day every day!
    What is your hobby outside of exercise?: I really enjoy cooking, especially baking desserts!
    Where is your favorite place you've been?: Probably La Jolla, California or Lake Murray, South Carolina
    What is your specialty?: My mom says I’m special at everything!
    What is your spirit animal?: My spirit animal is a pufferfish, according to primalastrology.com
    What is your cheat food?: There are so many to choose from, but I would have a hard time turning down a fat cheesesteak
    What is your favorite joke?: ANY AND ALL DAD JOKES ARE MY FAVORITE JOKE.
    What is your favorite funny memory?: I don’t have any. I am serious 24/7.
    What is your most embarrassing moment?: Spilling red wine on the owner of the Pittsburgh Steelers in front of his guests.
    What is your proudest moment?: Spilling red wine on the owner of the Pittsburgh Steelers in front of his guests. Go Ravens.
    What is your dream vacation?: I’m not well traveled, so I would love to explore the Polynesian Islands and live with the locals for a while.
    What is your fitness goal?: My ultimate goal is to represent the USA in rugby in the future.
    What is one thing no one knows about you?: I have 9 years of experience playing the cello, and hope to pick up violin in the future. Also a member of my family wrote the most famous Maryland-themed Christmas song, Crabs for Christmas. Now available on I-Tunes.

  • team member

    Jeremy Lujan - Trainer

    Ask Jeremy for his intro when you see him!

    Read their interview +

    Where are you from? I am from Littleton, CO. 
    Where did you go to school? I went to CU Denver!
    What is your favorite sport? My favorite sport is football. 
    What is your favorite exercise? My favorite exercise is the back squat. 
    What is your hobby outside of exercise? My favorite hobby outside of the gym is fly fishing. 
    What is your favorite place you’ve been? My favorite place that I have ever been to is the gym. 
    What is your specialty? My specialty is bodybuilding style workouts.
    What is your cheat food? My favorite cheat food is donuts!
    What is your fitness goal? My fitness goal is to get HUGE!
    What is one thing no one knows about you? I am not going to say one thing that no one knows about me because if I said it then everyone would know. 



  • team member

    Will Sasser - Trainer

    Ask Will for his intro when you see him!

    Read their interview +

    Where are you from? I was born in Doylestown, PA. It is around 20 miles outside of Philadelphia.
    What are your training certifications? I am a NASM Certified Personal Trainer, and I am pursuing my NASM Certified Nutrition Coach Certification.
    Where did you go to school? I attended Clemson University. Go Tigers!
    What is your favorite sport? My favorite sport is football. Fly Eagles Fly!
    What is your favorite color? My favorite color is navy blue.
    What is your favorite exercise? My favorite exercise is the deadlift. 
    What is your hobby outside of exercise? My hobbies outside of exercise include traveling, eating great food, and walking my black lab Lulu.
    What is your favorite place you’ve been? My favorite place I have traveled is Brussels, Belgium.
    What is your specialty? My specialty is mixing strength workouts with sport and life specific twists. 
    What is your spirit animal? My spirit animal is my dog Lulu. She is a black lab/pitbull mix.
    What is your cheat food? My favorite cheat food is by far Cookies N’ Cream Ice Cream!
    What is your favorite joke? My favorite joke is “If the early bird gets the worm, I’ll sleep in until there’s pancakes.”
    What is your favorite funny memory? My favorite funny memory is when my friend wore sunscreen on his face at the beach and none of it rubbed in. His face was bright white for the afternoon and he had no idea. He looked crazy and scary at the same time. 
    What is your most embarrassing moment? My most embarrassing moment is when my pants ripped sliding into second in Little League Baseball!
    What is your proudest moment? My proudest moment so far was graduating from Clemson University. 
    What is your dream vacation? My dream vacation is to go back to Ireland with my girlfriend Grace for two weeks!
    What is your fitness goal? My fitness goal is to achieve a lifestyle that balances strength workouts, proper nutrition, and a little fun with all of the discipline
    What is one thing no one knows about you? One thing no one knows about me is that I used to hate olives and now I love them.