I am still reeling from another amazing ISSN conference.

Good reeling.

Brain full.

Voice crispy.

Body moving like someone replaced my normal joints with airport furniture.

After a few days of presenting, talking shop, catching up with brilliant people, and pretending my nervous system is not being held together by caffeine and conference carpet, I am moving a bit slow today.

Still happy as hell.

Also mildly cooked.

So I’ll keep this one short because the clock is loud tonight.

The expanded wearables breakdown from my ISSN talk disappears at midnight Pacific tonight.

This is the expanded version of my ISSN talk.

What to trust.

Which numbers to ignore.

How to coach from real signal instead of letting a tiny wrist computer hallucinate your client’s calorie math while wearing a fake lab coat.

What Walks Out The Door At 12:01

Calorie burn on your client’s watch can be off by 400 to over 1,100 calories per day.

That is not a rounding error.

Nobody should call that “close enough.”

We are talking about several donuts your client thinks they earned but did not.

People screenshot that number.

Clients build deficits around it.

Coaches adjust food based on it.

Apps treat it like gospel.

Meanwhile, that wearable metric is out in the parking lot snorting coke off the bumper of a Yugo.

Bad input.

Worse coaching.

Sad spreadsheet.

The Useful Stuff Is Boring

Here’s the annoying part.

Metrics that actually hold up are not the sexy ones.

Overnight HRV - good as long as follow a few rules.

Resting heart rate.

Respiratory rate -depending on device.

Trends over time.

Context.

Quiet signals.

Nobody posts a shirtless selfie with the caption, “Respiratory rate remains boring and stable, let’s gooooo.”

Those numbers actually help you coach.

Respiratory rate especially does not get enough love.

I geek out on it hard.

Maybe too hard.

Watch the F1 driver data on Drive to Survive and you’ll see it immediately.

Breathing tells you what the system is paying.

Same idea with your client.

Flashy numbers scream.

Quiet numbers whisper the truth.

Consistent Does Not Mean Accurate

This is where coaches get trapped.

A device can be consistent and still wrong.

Very wrong.

Imagine a scale that says you weigh 900 pounds every morning.

Reliable?

Sure.

Useful?

Only if you are secretly a Belgian draft horse with a MyFitnessPal account.

Wearables can do the same thing.

If the calorie number is consistently wrong, you do not have accuracy.

Repeatable nonsense is still nonsense.

That distinction has wrecked more diets than birthday cake.

Because when a client says, “My watch says I burned 1,200 calories,” the wrong move is to nod and build the plan around it.

Better coaching means knowing which metrics deserve a seat at the table and which ones need to wait outside in the alley with the raccoons.

That is exactly what this bonus covers.

Why This Belongs Inside The Flex Diet Cert

Nutrition coaching is not just macros.

Fuel decisions depend on recovery.

Training load matters.

Sleep changes the entire equation.

Stress can make the “perfect plan” land like a kettlebell dropped on your foot.

Once you start making nutrition and recovery calls from bad wearable data, even a great coaching system gets dragged into the swamp.

The Flex Diet Cert teaches you how to pick the right lever for the client in front of you.

This wearables breakdown helps make sure the data you are using to pick that lever is not complete wrist-computer fan fiction.

Enroll by midnight Pacific tonight and the expanded ISSN wearables breakdown is included free.

After that, the cert stays the same glorious beast.

This bonus goes into the vault.

For this round, it does not come back out.

So this is me doing my best Tom Cruise dangling off a building voice:

Your mission, should you choose to accept it, is to stop overthinking it before the bonus self-destructs at midnight Pacific.

​https://miket.me/fdc​

Much love and met flex,
Dr Mike

PS — All three timed bonuses are gone after tonight. From here, it’s just the cert and the final clock.

​https://miket.me/fdc​

____________________

Mike T Nelson CISSN, CSCS, MSME, PhD
Associate Professor, Carrick Institute
Owner, Extreme Human Performance, LLC
Editorial Board Member, STRONG Fitness Mag

Mike T Nelson is a PhD and not a physician or registered dietitian. The contents of this email should not be taken as medical advice. It is not intended to diagnose, treat, cure, or prevent any health problem - nor is it intended to replace the advice of a physician. Always consult your physician or qualified health professional on any matters regarding your health.

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