Hear From Our Customers

“I've been an athlete my entire life, I've been in and out of countless gyms, and I've worked with more trainers than I can count. D1 has had one of the biggest impacts on my life because of the community that they have built around the gym. I crave competition on a daily basis, and I know that when I step into a D1 class I'm competing against 5-10 like minded athletes. There are definitely days that I would rather sleep in or have that extra cup of coffee, but because of the team based approach, I find myself being picked up and pushed by everyone else. The gains I have seen have not only shown on a physical level, but also on a relationship level. I can honestly say that the people I have met and have gotten to know over the last year are friendships that extend past the front doors of D1. Thank you D1. Keep trying to improve me as an individual, and also the community in which you represent.”

Chris Summers
Grand Rapids, MI

“This place is the real deal. The level of training and improvement I've received here have helped me prepare for my Pro Day. My 40 decreased by 0.3 seconds, my vert improved 6 in, and I'm much more confident in my abilities to make heads turn. Thankful to have found out about D1 GR and a special shout out to my boy Blake for taking me to the next level.”

Jalen Cook
Grand Rapids, MI

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Sometimes you can’t do it all, all by yourself. For months, I walked into the commercial gym thinking I can get right back into my old program and mindset. And every time, I’d leave early and frustrated.

At D1, there’s an amazing staff that really hypes you up, takes you through a program, and knows what kind of support and feedback you need. It was exactly the environment I needed to help me fall back in love with fitness.”

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Jessica K
Grand Rapids, MI

“D1 Training has most helped improve Liam’s speed and agility which in turn has helped with his overall quickness, both physically and mentally. I also believe the strength component has helped him continue to grow and improve as a well rounded soccer player.”

Chad Jansen
Grand Rapids, MI

“The D1 team reflects exceptional training that combines enthusiasm, knowledge, clinical care, personalization, and support.
Although I have worked with Dave Heinz before as he is recognized as one of the best trainers in the State, what makes D1 great is the entire team. Shout out to Dave, Alyssa, Leena, and Jordyn - keep up the great work.”

Mike Willerer
Grand Rapids, MI

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All my life I have struggled with issues regarding weight, health, how I see food and low self esteem. After turning 40 I knew my focus needed to change. For me it started with knowing there is NO PERFECT, it’s ”practice makes progress“!!! So finding all the best ways to practice has been my challenge. I love a challenge, the more outside my comfort zone and outside the box the better!!

I had truly hit a plateau and was getting bored, nothing was really pushing me anymore when D1 came into the picture.

D1, and the amazing coaching staff welcomed me in and accepted the challenge of pushing me to new goals.
Each morning I rise to a new set of things mostly out of my comfort zone, alongside a group of others supporting one another on this new path. I have found myself trying new things, sore in new places, conquering goals while surrounded by a new family supporting me! D1 came exactly at the right time to help me find the practice I need to find my “progress”, thanks D1, can’t wait to see where we go together!!

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Chrissy Sanburg
Grand Rapids, MI

“After my youngest son's second football practice about 6 parents came up to my husband to ask what he had done to get so much faster. We were sure to share that it was hard work with the help of D1 Training. He actually finished in the top two for his sprints. He is usually in the very back of the group. It really made him feel so proud of himself. I hope you all understand the impact your coaches and program has for kids that aren't necessarily "natural" athletes. For my son to be in the front was pretty special for him and a big confidence builder. Thank you again!”

Barbara Homier
Grand Rapids, MI