Gray WolfPerformance

Metabolic Testing

Know your engine.

Most training and nutrition runs on formulas and averages. Yours can run on your numbers — measured on real equipment, read by a real coach. Your zones, your fuel, your pace: the truth about your body, and honest room to grow.

What we measure

Four reads, one picture.

Four quick assessments that stack into one honest picture of how your body moves, burns, and recovers — the engine, the fuel, the frame, and the strength behind it.

Active Metabolic Assessment · VO₂

Your aerobic engine

Measures — VO₂max, your true heart-rate training zones, and your threshold — the pace you can actually hold.

Why it matters — You stop guessing how hard to go. Every zone is set to your body, not a chart on the wall.

On the treadmill with a mask, ~20 minutes, building from easy to all-out.

Resting Metabolic Assessment · RMR

What your body actually burns

Measures — Your resting metabolic rate — the real number of calories your body uses at rest, measured, not estimated off an online calculator.

Why it matters — Your fuel targets get built on what your body truly needs — the honest baseline behind everything on the nutrition side.

A few quiet minutes at rest with the mask. That's it.

InBody

Real body composition

Measures — Lean muscle and fat, segment by segment — each arm, each leg, your trunk — plus how it's all trending over time.

Why it matters — You see where you're strong, where you're uneven, and whether you're actually building muscle — not just watching a scale number move.

Step on, hold the handles, ~60 seconds.

InGrip

Strength & symmetry

Measures — Grip strength and left-to-right balance — a fast, honest read that tracks alongside everything else.

Why it matters — A simple strength benchmark you can watch climb, and an early flag when one side is lagging.

A squeeze in each hand. Quick.

Measured, not guessed

Stop training off a formula. Start training off your numbers.

The loop

Test. Train. Fuel. Re-test.

A test isn't a one-time report that lives in your inbox. It's the start of a loop — every number feeds both how you train and how you eat, and every 3 months you re-test and watch it move.

01

Test

Erin runs your assessments in person.

02

Train

Your zones become a 12-week program.

03

Fuel

Your metabolism becomes real targets.

04

Re-test

Every 3 months — see the engine grow.

Into training

Your engine, on a program

Your measured zones generate a personalized 12-week conditioning program — easy aerobic days, threshold days, and peak days that wave up in a smart progression. Re-test at week 12, and the next block starts from your new, higher fitness.

Into fuel

Your metabolism, on a plate

Your measured metabolism becomes real fuel targets — then a plan you can cook (recipes that hit the numbers) or order (meals and groceries that do it for you). Train the engine, fuel the engine.

For adults, that's real macro targets. For young athletes, we keep it plates and portions — never numbers.

Your training map

The zone ladder.

The single most useful thing you leave with: a clear map of how hard to go, and what each effort is for. Your exact heart-rate ranges are set from your test — and with the laminated RPE scale, you can train by feel alone, no gadget required.

Warm-UpPrime the engine
RPE 2–4Ramp up, raise core temp, get ready to work.
Aerobic RestZone 2
RPE 3–4All-day, conversational pace. Builds the base and the fat-burning engine.
ThresholdZone 3
RPE 6–7Comfortably hard — the pace you can hold. This is what raises your ceiling.
PeakZone 4–5
RPE 8–10Max-effort intervals. Short, hard, and how your VO₂max grows.

What you walk away with

Not a PDF in your inbox.

01A warm, plain-English report — your engine, your zones, your week. Not a wall of jargon.
02A Specific Warm-Up card, built for you.
03The laminated RPE scale — point to a number, know exactly how hard to go. No gadget required.
04Your 12-week conditioning program, in digestible 4-week blocks.
05A re-test every 3 months — the proof it's working.
A VO2 metabolic assessment on the treadmill at Gray Wolf Performance

Who runs it

A person, not a printout.

Your testing is led by Erin Anderson, NP— in person, at the gym. She runs the assessment, and your coach reads the results with you and turns them into a plan. No mask-and-mail, no report you can't decode alone.

Straight talk

The numbers are measured. The meaning is coached.

The equipment measures precisely — that's its job. What the numbers mean for you, and what to do about them, is your coach's read, confirmed in person. Never an algorithm's guess, and never framed to scare you. We measure growth and performance — that's the whole point.

Ready to see your numbers?

Request a metabolic assessment.

Tell us a little about yourself or your athlete and we'll get you scheduled with Erin — and walk you through what to expect.