Lifestyle & longevity

Design daily habits that support hormonal balance and long-term vitality. Master sleep and circadian timing, eat for metabolic stability, and use micronutrients with purpose. Make informed choices about alcohol, nicotine, sauna, and cold exposure. We translate longevity research into clear, practical playbooks you can apply today.

Novak Djokovic proactive care performance: The science of defying age

Novak Djokovic proactive care performance: The science of defying age

Dr. Bruno Rodriguez, DPT, CSCS avatar
Dr. Bruno Rodriguez, DPT, CSCS: Strength, Recovery, and Physical Therapy Expert
Nov 30, 2025 · 15 min read

Elite performance in your late 30s is achievable when you proactively manage the predictable physiology of aging—countering testosterone’s ~1–2% yearly decline after 30, VO₂ max’s ~10% per-decade drop, and up to ~8% per-decade muscle loss with consistent training, strength work, and recovery before injuries force a reset. Djokovic is a high-profile example of this “prevent ...

Can i drink coffee while fasting? The metabolic rules you need to know

Can i drink coffee while fasting? The metabolic rules you need to know

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 30, 2025 · 9 min read

Black coffee generally keeps a metabolic fast intact because it has about 2–5 calories per cup and does not trigger a significant insulin response, so fat burning can continue. The nuance is caffeine’s effect on cortisol and your goal (weight loss vs. strict “autophagy” rules), which can change what “allowed” really means. “From a hormonal ...

Does diet coke break a fast? What the science actually says

Does diet coke break a fast? What the science actually says

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 29, 2025 · 14 min read

Diet Coke typically does not break a strict, calorie‑based fast because it contains about 0–5 calories per serving. But its non‑nutritive sweeteners can still activate sweet‑taste receptors and the gut–brain axis, potentially nudging insulin, gut hormones, and hunger—and quietly dulling some fasting benefits in certain people. “From a pure calorie standpoint, diet soda does not ...

Normal range vs optimal: What labs actually mean for men

Normal range vs optimal: What labs actually mean for men

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 29, 2025 · 13 min read

Many men are told their blood work is “normal” even though they feel tired, softer, and off their game. Understanding optimal vs normal lab ranges can turn a frustrating dead end into a clear plan to feel and perform better. “When a lab report says ‘normal’, it mostly means you’re not in immediate danger. It ...

Nad+ side effects: What science really says about safety, injections, and anti-aging hype

Nad+ side effects: What science really says about safety, injections, and anti-aging hype

Dr. Susan Carter, MD avatar
Dr. Susan Carter, MD: Endocrinologist & Longevity Expert
Nov 29, 2025 · 13 min read

NAD+ is a coenzyme that helps cells make energy and repair damage, but NAD+ injections are still an experimental longevity therapy with limited high-quality human data, so long-term safety, side effects, and anti-aging benefits aren’t established. Here’s what the evidence actually shows so far—and what to weigh before paying for NAD shots. “NAD+ is central ...

Special OfferLab panels included: $300/year free for all members