top of page



"The martial arts classes are a joy.  We have been working hard on the basics, yet the instructors keep classes feeling new and unexpected!  I enjoy it so much and get so much benefit, I would have never reached this degree of fitness at 73 years old without your instruction, leadership, insistence, and fun!” 

Peter Specker

Adult Martial Arts Student 

"This year it's been very difficult (to say the least) to stay active and healthy while doing our part to stop this pandemic. It’s kind of a catch-22, because a good immune system is really the only way to fight against viruses. Centerline has been a great help for us. My 7-year-old and I easily run out of activities--especially ones that keep him active--to entertain him while staying at home. We’ve been doing the online Kids Kung Fu and it’s been perfect for our current situation. Centerline’s online classes are efficient and well thought out. My son stays active in the safety of our home. He enjoys it very much, and in the short time that he’s been practicing, he’s gotten more fit and independent. He even dreams of getting a black belt someday. Here’s to hoping that this pandemic ends soon and we can finally also attend class in person. Thank you, Centerline!"



Kids Kung Fu Parent


I was feeling a little "on the fence" about being ready to return for Kickboxing classes after COVID-19. I think I just wasn't quite sure what it would really be like and if I would feel comfortable being around other people. But I read ALL of Laura's emails as they came through and attended the virtual reorientation which reviews the Code of Conduct that is required before returning. 

At the studio, everything is very clearly marked and there is plenty of room to keep space from others. I was a little nervous that working out with a mask on would be a big challenge but it ended up being totally fine. Coach Laura gives modified versions of exercises so we won't over do it. It felt quite easy to listen to my body and modify the intensity of the workout on my own if I felt like I needed a break, or if I wanted to amp things up a bit. Laura was able to give pointers from a safe distance throughout the class. 


At the end of class each student is instructed to grab (while keeping distance, of course) a clean cloth and to wait for the instructor to come around and spray the bag down. I then wiped my bag down along with my personal items and the floor space I had my items on, and after class the floor is thoroughly disinfected by the staff.

I have felt very confident in all the steps Centerline is taking to make the studio a safe environment for everybody during COVID-19. Class was great, and it felt really good to be back in the space!

Leslie Miller

Centerline Kickboxing Student 

"Centerline has done a fantastic job of adapting to the current situation.  There are clear instructions throughout the gym and ample room to keep your distance from fellow classmates.  I've been enjoying working out in a mask.  It makes me work on pacing myself and focus more on perfecting techniques.  It's still way better than working out at home and I'm glad to be out of the house.  Laura and her team have done all of the hard work to maintain a safe and clean space so that all I have to focus on is training."

Shikhar Bajracharya

Centerline Martial Arts and Kickboxing Student


"I wanted to let you know how much I’m enjoying learning JKD.  After only a short time, I’m in better shape than I’ve been in years (too many years).  My wife can also verify that JKD has been a calming influence in my life and I always look forward to the focus that class brings.  Each class is varied and challenging, filled with students working to better each other through the continual discovery of the martial arts.  Nobody gets discouraged and the energy and excitement in class is infectious.  That doesn’t just happen – it is a direct result of your teaching and your spirit.  On top of that, the new space is fantastic!"

Mike Blegen

Centerline Student in Lee JFGF / JKD

"Classes are hard work but doable for people of all fitness levels (they give options for many of the workouts to be able to accommodate the least fit and challenge even the most fit). Definitely an amazing full body workout. I never did kickboxing before coming here, but they made it easy to learn and love and have a great intro deal!"

Krystal Anderson

Centerline Kickboxing Student and Cornell Law School Graduate


"Collin is an excellent fitness trainer. He is passionate about martial arts and fitness which shows through the energy and enthusiasm he brings to every session. His easy going, friendly personality creates a relaxed, comfortable atmosphere. He has a keen insight to the people he teaches and because of his efforts, I am stronger and becoming more flexible. He makes each workout challenging, creative and most importantly, fun! I highly recommend training with Collin to anyone seeking health and fitness improvements." 

Harris B. 

Centerline Martial Arts Student & Fitness Bootcamp Participant

"Collin is the best! His workouts are creative, inspiring, positive, challenging, and effective--all in a single class.  He works well with all fitness levels.  You'll end up in the best shape of your life and have fun getting there!"

Lynn Stout

Cornell Professor & Centerline Group Fitness Regular


"I just wanted to tell you how much Forrest loves taking kung fu with you. He wanted to try on his uniform when we got home after maple fest... His friends are doing Tball soon, which conflicts with kung fu times. I asked if he wanted to do Tball and put kung fu on hold and he said no, he loves martial arts and he wants to go all the way to black sash. Thank you so much.  It is so fun to see him so excited and dedicated to something..."

Margaret, Kids Kung Fu Parent

"I am 54 years old and have always been an active person, until I got hurt.  I stopped doing sport activities for several years, and I felt old.  I decided to start running again but with more direction, and I connected with Collin as my personal trainer. He's a fantastic fitness trainer, and has helped me to get in the best shape of my life.  He works me hard while guiding me to reach my goals, and best of all I've been injure free. I feel great, with more energy, and I've found the discipline to work out and find the joy of training.  I don't feel old and I feel as good as I felt when I was in my 30's."

Augusto Diemecke

Professional Musician & Centerline Personal Training Client

bottom of page