About Cardio High

Cardio High operates a clean gym with a friendly atmosphere in Newton, MA. Our innovative approach to fitness combines fast paced interval training with low impact movement, so clients get a great workout that leaves them with a cleansed, energetic feeling. All clients wear Polar heart rate monitors, so that they learn to train at their own pace.

Cardio High trainers provide guidance and motivation, so clients train with proper form and push themselves safely to their limits. Studies show that people continue to burn fat for up to 36 hours following a high intensity workout. It's a great way to get fit fast

Our Team

Mark Goodman

Founder, Trainer

Mark played lots of squash, tennis and Ultimate Frisbee in his 30s and 40s, paying for it with plenty of shoulder, back and leg injuries. As he got older, Mark wanted to continue experiencing that incredible high from intense sports but without the risk of soreness and injury.That is what inspired the Cardio High workout.Mark worked with a variety of trainers and coaches, asking each to raise his heart rate without straining his body. He also participated in dozens of different fitness classes looking for high-intensity movements with minimal impact.Armed with a range of ideas, Mark tested the various programs with trainers, clients, physical therapists and corrective exercise guru Aaron Brooks, the founder of Perfect Postures. This led to the core set of exercises that form the Cardio High workout.Since the very beginning, Mark has worked on adapting Cardio High to many levels of fitness, from athletes intent on improving speed and stamina to those looking to get in shape with a safe, intense workout. The Cardio High team at our gym are focused on making Cardio High varied and fun.

Leslie G.


Leslie has been passionate about exercise beginning at a young age when she swam competitively in high school and college. She added distance running to her repertoire when she accepted the challenge to run the Boston Marathon in 1998 for Team in Training. Always ready for a new challenge, she began competing in Sprint Triathlons in 2015 to support JDRF (Juvenile Diabetes Research Foundation), a cause she passionately supports. In recent years, she rediscovered her love for cycling and has been doing a Century Ride (100 miles) to support JDRF each year since 2019. Leslie has loved sharing her passion for fitness with the Cardio High community since 2017!

Stephanie H.


Stephanie has been active from a young age, but her real passion for fitness developed when she was introduced to kettlebell. Eager to share her passion with others, she completed her Group Fitness certification with AFAA and has been teaching since 2013. Since then, she completed her Personal Training with NASM and RKC (Russian Kettlebell Certificate) with Dragon Door. Always looking for the next challenge, she has done many road races, a half marathon, multiple mud races, including 3 Tough Mudders, and in June 2019 completed the Mt Washington Road Race.

Kelly O.


Kelly has always been an active and competitive athlete, participating in multiple sports from a young age until high school. She found her passion and competitive drive for fitness and kickboxing at TJ’s Body Shop, 3 years ago. Since then Kelly has worked hard to become a certified personal trainer through AAPT of Boston and successfully earned a black belt in Thai Kickboxing. She especially enjoys using her passion, desire, and drive to motivate other towards reaching their health and fitness goals.

Tracy O.


Tracy O started as a Cardio High client a few years ago, and she enjoyed the variety of workouts and atmosphere at the studio. After completing a training program through American Academy of Personal Training in Boston, Tracy became a Cardio High trainer. She has led a variety of Cardio High classes in the studio and on Zoom, and her classes consistently receive rave reviews. Outside of Cardio High Tracy enjoys biking and going on hikes with her dog Buddy.

Susan S.


Susan S was one of the first Cardio High clients. She has taken more 1,500 classes including those in the gym, outdoors and on Zoom. Susan is the perfect coach for those clients who do not love to exercise - as she did not enjoy exercise... before trying Cardio High. Susan currently leads outdoor and in studio sessions. She brings a deep understanding of the Cardio High method and a friendly, engaging personality. Susan received her group fitness training through NETA.
“I look forward to a Cardio High workout. It’s fun, interesting and intense. The gym is always clean, and the heart rate and calorie display is great training feedback too!”