Meet the Coaches





CrossFit Next Generation’s owner is greater Tulsa’s most dedicated coach. His experience and passion are unmatched. 

mark image

Mark Heiliger


If we had to use one word to describe our owner, Mark, it would be motivator. He will be right there cheering you on as you get that last lift you didn't think you could get. Mark feels privileged and humbled to be a part of each member's life story. Helping members achieve their goals and living their best life is what gets him out of bed in the morning.

Mark's path to CrossFit is similar to other in that he loved training, but needed the accountability to keep showing up. CrossFit and the great community at Next Generation CrossFit was just what he needed. From his first day three years ago to owner today, Mark has traversed a CrossFit journey to be proud of. He looks forward to seeing you and getting to know your passion.

"I can't tell you how many times I don't feel like training and tell myself, "I'll just do one set and see how I feel.'You would think it would stop working at some point, but I almost always end up doing the whole workout. Just start. Do a little and see what happens." James Clear Atomic Habits



  • CrossFit Level 1 Trainer

"Really friendly and encouraging!" - Elizabeth P.