Meet the Pulse45 Team

Our certified group trainers are ready to help you reach your fitness goals. If it’s weight loss, enhanced cardio endurance, core strengthening or athletic training, our skilled staff is ready to meet the challenge of helping you achieve your goals!

Marian Harris


AKA: Wahoooo!
Location: Gainesville Studio

Marian has been personal training for 15 years, has been featured on the Oprah Show, done a video series with Body By Jake! Marian is also an author. A lifelong athlete, Marian was a scholarship varsity swimmer at Clemson. Her first book is her life story, 19 Cent Millionaire.

Jose Barcenas


AKA: The Pony
Location: Gainesville Studio

Jose Barcenas is a highly experienced and credentialed trainer. Jose holds a Master of Science in Kinesiology, Bachelor of Science with Physical Education Major and Psychology Minor,, as well certified in Personal Training from The American Council on Exercise and Strength and Conditioning from  the National Strength and Conditioning Association. Jose has also worked as a Graduate Assistant Strength and Conditioning Coach for teams at North Georgia College, working with basketball, cross country, track and field, baseball, soccer, golf and softball athletes. In addition, Jose has hundreds of Group Fitness Instruction sessions under his belt from our Pulse45 program, as well as working with private personal training clients.

Jose was born in Habersham and grew up in Tiger, Ga. The seeds of Jose’s journey into fitness as a career were planted early in life. Jose was an overweight child from kindergarten to middle school until he decided he wanted to change. This lifestyle commitment not only allowed him to move and feel better but also allowed his self-confidence to increase. Seeing the positives from these changes led him to decide to help others see the same benefits

Colleen McCarthy


Location: Gainesville studio

Registered Dietitian Nutritionist, Certified Massage Therapist, LEAP Therapist, Yoga Teacher and Holistic Health Coach. Living with Celiac disease herself, Colleen specialize in all things GUT health, food sensitivities, eating disorders, sports nutrition and other inflammatory conditions. Colleen views the body is a whole, working with the energetic/emotional bodies and the physical body, rather than as two separate, mechanical system to help align with your highest potential of optimal health.

Colleen’s educational and experience background includes massage therapy, functional and integrative nutrition, bachelor of science in dietetics, specializing in sports nutrition, food sensitivities and gut health.

Education and Credentials: UNC Charlotte: Bachelor of Arts in Dance Performance, Atlanta School of Massage: Neuromuscular Therapy, Deep Tissue, Reflexology & Seated massage, Life University: Bachelor of Science in Dietetics Cum Laude. Continued Education and Certificates: Certified LEAP Therapist: Specializing in Food Sensitivities and Immune Function, Certified in Food Allergies, Certified Yoga Instructor, Level 2 Reiki Practitioner

If you are interested in working with Colleen, please email us at and let us know how you feel Colleen can best help you. We will have a menu of her available services posted in the next week.