Kyle Hulbert is the co-founder and operator at The Longevity Centers of America, which he built alongside Dr. Kosubevsky with the mission to drastically improve the lives of millions of people. Drawing on his own transformation as a patient, he designed the practice around accessibility, affordability, and focus on data-driven regenerative care for individuals who have been underserved by conventional medicine. His background bridges academic rigor and practical application. Hulbert holds bachelor's and master's degrees in business administration, is a doctoral trained researcher, and has carried credentials as a Certified Wellness Coach, Certified Nutrition Coach, and Certified Personal Trainer, all through the National Academy of Sports Medicine, as well as an Integrative Nutrition Coach certification from the Institute for Integrative Nutrition and a Dietary Supplement Specialist designation through the Designs for Health, a trusted leader in science-backed wellness solutions. Hulbert also co-hosts a weekly podcast, "Longevity Unlocked," with Dr. Kosubevsky, translating emerging research on detoxification, hormonal health, and regenerative therapies into real-world discussion to better educate individuals about their health.
The scale can’t tell the difference between fat and muscle — body fat percentage can. It’s a more useful picture of your body composition than weight or BMI alone, and you can estimate it with nothing but a tape measure. This calculator offers two validated, no-caliper methods: the U.S. Navy circumference method and Relative Fat […]
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Caffeine wears off slower than it feels like it does. Long after the alertness fades, a meaningful amount can still be circulating — quietly cutting into the deep sleep you can’t consciously feel it stealing. This calculator logs what you drank and when, then shows how much caffeine is still in your system at bedtime, […]
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Your body has its own clock — and it doesn’t always agree with your alarm. Some people are wired to rise early and fade by evening; others don’t hit their stride until later and would happily sleep in. That internal timing is your chronotype, and the gap between it and your work schedule is your […]
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Before you change how you eat, it helps to know two numbers: how much energy your body burns at rest (your BMR) and how much you burn across a full day (your TDEE, or maintenance calories). This calculator estimates both with the Mifflin-St Jeor equation — the formula dietitians and researchers reach for most often […]
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How old is your body — really? Your fitness age answers that. It compares your VO₂max (the volume of oxygen your body can use at peak effort) to population norms and tells you the age at which your fitness would be considered average. A 48-year-old with strong cardio fitness can carry the fitness age of […]
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Aging impacts every cell in your body, particularly through the progressive decline of nicotinamide adenine dinucleotide (NAD+).1 This vital coenzyme serves as the foundation of cellular metabolism and energy production, directly influencing how you feel and perform each day. At The Longevity Centers, we specialize in advanced IV therapies designed to replenish NAD and support […]
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