Meet Your Exericse Physiologist
I'm Zak an Exercise Physiologist with 14 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.
Zak Brennan
Exercise Physiologist
M.S. Univ of Tampa
Masters of Science in Exercise & Nutirtion Sciences
6,000+ Medical Sessions
Physician Supervised Rehab & Treatment
3,000+ People Helped
1:1 Sessions, Small Group Training and Team Strength & Conitioning
14 Years of Experience
Personal Trainer, Physical therapy Aide, & Clinical Exercise Physiologist
What is VO2Max?
VO2Max is one the strongest markers of current health status and predictors of longevity. Simply put, the maximum amount of oxygen your body can consume and use during strenuous/maximal activity.
A Cardiopulmmoary Exercise Test (CPET) measures your VO2Max by analyzing the intergrative responses between the cardiovascular, pulmonary and musculoskeletal systems.
It is a comprehensive 75-90 minute assessment that includes:
Pulmonary Function Testing (PFT) to understand overall lung function and capacity.
Then an 8-12 Minute Graded Exercise Test is administered on a treadmill which measures breath-by-breath, the amount of oxygen consumed and cardbon dioxide expelled, as well as respiratory frequency and minute ventilation (the volume of air consumed across a minute).
Also recorded during the test are heart rhythms via an Electrocardiogram (ECG), Blood Pressure, and Blood Oxygen Saturation.
All of this data is then interpreted to provide an in-depth look at your overall health, to provide your VO2Max, Respiratory Thresholds, Target Heart Rate Zones, Fat & Carbohydrate Utilization and even identify abnormal reponses that could be predictors of increased cardio/pulmonary/metabolic risk factors.
Bridging the gap between exercise physiology and everyday performance
This isn't personal training. It's clinical exercise physiology — built around your data.
Video Courses 💻
Learn topics ranging from basic exercise and nutrition to advanced physiology and more
On-Demand Workouts 📖
Get access to a growing library of programs you can select and change at anytime
Nutrition Tracking 📖
Track daily meals, macronutrients and view step-by-step recipes and meal ideas
Metrics & Progress 📈
Record body metricsand intergrate wearables to see your progress and feel successful
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Pre-Launch Waitlist memebers recieve disocunted pricing
Client & Patient Feedback
Hear what clients and patients have to say
Frequently asked questions
Answers to our most common questions
What is an Clinical Exercise Physiologist?
Am I healthy enough to do a VO2Max Test?
What's the difference between 1:1 & App Membership?
Is there a free a trial?
What is the refund policy
myphysiology LLC 2026
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