Meet the CrossFit Coaches

Passionate Coaches

When you’re ready to raise your upper limits, these are the men and women who are going to help make that happen. These coaches and instructors are passionate about what they do, and even more passionate about getting you the results you want.
  • Amy Klein


    Owner/Coach Amy Klein in known for her motivation skills. “I want to know what motivates every athlete here so I can hit those triggers when they are in the gym,” she says. “I want to know what their favorite music is, what their favorite movements are, what they hate. Yes, it’s a bit extreme, but these things matter. They are the things that can make or break a workout, and they are important!”

    Before Opening Upper Limit, Amy worked as a personal trainer and group fitness instructor for more than 16 years. She was a national bodybuilding competitor for 7 years and holds the 2015 Arizona State Women’s Masters Division first place in Olympic Weightlifting.


    • CrossFit Level 1
    • USAW Level 1 Coach
    • NSCA Personal Trainer
  • Michael Prangner


    Coach Michael Prangner “did not wake up like this.” He says, “I changed my lifestyle for this. I work out late for this. I changed what I eat for this. I sweat for this. I made this, and this is worth it!”

    He’s passionate about helping people succeed and change themselves with a healthier lifestyle. “I love to see my members (my family) do things they didn’t know were possible for themselves and to reach goals they have never reached before,” he says.


    • CrossFit Level 1
    • USAW Level 1 Sport Performance Coach
  • Sean Fulkerson


    Sean Fulkerson has been a CrossFitter for six years and specializes in Olympic lifting, motivation—and sarcasm. “My most notable accomplishment is surviving three decades of life,” he says. “Like so many, I was at a point where I was looking for something to get me off the couch, and make it so I can continue to enjoy the site of my lower extremities. I saw the CrossFit games on ESPN3, thought that it looked fun. In-between events, I jumped on the Google and found a box. That Monday, I walk into one of the local boxes to take my assessment. I don’t remember much of that first workout. I blacked out somewhere around 300m on the rower, and then standing outside the box by a tree re-enjoying my lunch. That was when I had drunk the Kool-Aid® and was hooked.”

    As an athlete himself, Sean ran a 400m at an all-state level in high school, and dabbled in downhill mountain biking, and inline speed skating, though his 20s. His path to becoming a CrossFit coach was a bit tumultuous. “After a series of unfortunate events, I was in my parents’ basement,” he says. “I put a few cities on a dart board, spun around in circles a few time, and threw a dart. It hit Phoenix, so a few weeks later, I had a few things in my car, and headed west, young man. After a few months in town, I found a box, and was back in the business of fighting obesity.”

    Not surprisingly, Sean is always an open book. His favorite motivational saying: “Always looking for progress, never perfection.”


    • CrossFit Level 2
    • CrossFit Rowing
    • CrossFit Kettlebell
    • Eat To Perform Level 2
    • Muscle Driver Olympic Lifting


TRY CrossFit Upper Limit FREE!

Simply choose your experience level and get registered for your FREE Jump Start package today!

CLICK HERE to get started if you are visiting from out of town.