The whole point is to keep you doing your life.

Why TrueHealth Age exists, and the voice behind it.

I've spent 40 years watching people get stronger, faster, and healthier — and the same number of years watching people lose those things they didn't have to lose. Sarcopenia. Falls. Heart attacks at 55. Skin cancer that was caught a year too late. The math is brutal: most of what we call "aging" is actually not aging. It's a stack of habits that ran for decades without anyone telling the person they had a choice.

That gap — between what's biologically inevitable and what's a habit problem — is what this app is trying to close.

Who I am, briefly

I'm Keith Kravitz. People who've worked with me call me Coach K. I've been a wrestling coach for 40 years. I've founded multiple FDA-cleared medical-device companies in vestibular function, autonomic nervous system measurement, pain management, cognitive health, and recovery. I've also been the guy stuck in a 5-to-6-hour sleep cycle compensating with caffeine and weekend naps — so I understand the failure mode, not just the prescription.

Most of the health content online is either too scientific to act on, too gimmicky to trust, or written by people who've never actually coached anyone through a real change. I built TrueHealth Age to be the thing I wish my clients had between sessions: an honest read on where they actually are, a small enough next step to do this week, and a coach in their pocket who isn't going to make them feel stupid for missing a day.

Why "True Health Age" instead of biological age

Biological age — the kind you measure with epigenetic clocks and lab markers — is fascinating science, but the test costs $300 and gives you a number you can't really change in a hurry. What you can change in a hurry is the stack of weekly habits driving the inflammation, the muscle loss, the sleep debt, the metabolic markers.

So we use a different definition: your True Health Age is the age your body is currently performing at, based on what you've been doing for the past seven days. It's not a lab test. It's a lifestyle-pattern indicator, calibrated against decades of population research. The number you get is honest, and — more importantly — it's a number that moves.

The coaching philosophy

Three rules, lifted from 40 years of watching what actually works:

1. Lower the bar until they can win. If the plan is too big, they don't fail at the plan — they fail at being human. The coach's job is to scope the assignment to something the person can actually finish, then raise it.
2. Validate effort, not outcome. A week where they did three days of the three-day plan is a win, even if they didn't hit the metric. The metric is downstream of the habit; the habit is downstream of the showing-up.
3. Never shame. If a person skipped a week, the coach doesn't crank up the volume. The coach makes the next week smaller. People who feel judged stop showing up; people who feel met show up again.

That's the voice you'll hear in every screen of the app, every weekly check-in, and every article in this newsletter.

What's coming

The mobile app on iOS and Android (the web version is what you're using now). The TrueHealth Protocols podcast — launching summer 2026. A Phase 3 paid layer for users who want to upload bloodwork, connect wearables, and get more personalized biomarker analysis. The free tier — the assessment, the protocols, the articles — stays free, forever. The whole point is to get good information in front of as many people as I can while they still have time to do something with it.

How to reach me

Every welcome email and check-in email I send comes from coach@truehealthage.com. Reply to any of them — it comes to me directly. I read them. I won't always answer fast, but I will answer.

For partnership, press, or anything that isn't coaching, hello@optimizinggroup.com.

TrueHealth Age provides educational wellness content only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before making changes to your diet, exercise, supplement, medication, or therapy plan.