Science-Backed Performance Testing & Exercise Physiology
CPET & VO2Max Testing, 1:1 Exercise Physiology & App Memebrship
Zak Brennan
Meet Your Physiologist
I'm Zak an Exercise Physiologist with over 12 years of experience across clinical, medical, and performance settings. My career was built at the intersection of science and human performance. Starting personal training in my garage to one of the world's leading hyperbaric oxygen therapy centers -I've helped everyday athletes to the highest level of performance unlock their true physiological potential.
At myphysiology.io everything is built on data. Your VO2 max, your training zones, your movement patterns — all assessed, tracked, and applied so your programming is never generic.
12+
Years of Clinical & Performance Experience
6K+
Medically-Directed Rehab Sessions
M.S.
Exercise & Nutrition Sciences, Univ. of Tampa
3,000+
Clients & Patients Helped
Services
This isn't personal training. It's clinical exercise physiology — built around your data.
1:1 Exercise Physiology
$100/session
Fully individualized programming. Assessment- driven. Wearable data integrated. Adjusted in real time.
CPET & VO2 Max Testing
$250
Breath-by-breath cardiopulmonary exercise testing. Know your true VO2 max, ventilatory thresholds, and training zones.
App Membership
$10/month
App-based training membership. Access structured programs, video courses, and progress tracking anytime.
Need more information?
Schedule your free 30-minute discovery call or text Zak your questons and let's build a plan around your physiology, your goals, and your data.