Testing administered by Andrea Dacey, RDN, CSSD, Board-Certified Specialist in Sports Dietetics.

Testing & Assessments

A lot of nutrition decisions get made on guesswork, how many calories someone thinks they need, how much they think they’re sweating, whether a body composition change is actually happening or just showing up differently in the mirror. Testing replaces the guessing with actual numbers, and those numbers are what a real plan gets built on.

Body Composition Testing

Body composition testing shows what’s actually changing when you train or diet, lean mass, fat mass, and how that ratio shifts over time. This matters more than weight alone, especially for athletes trying to change how they look or perform without losing strength or power in the process.

Results get used to set realistic targets and to catch problems early, like losing lean mass during a cut that was supposed to be fat loss only.

Resting Metabolic Rate (RMR) Testing

RMR testing measures how many calories your body burns at rest, instead of relying on a formula that estimates it. Formulas get it wrong often enough that it matters, particularly for athletes with a lot of muscle mass, athletes coming off a period of underfueling, or anyone whose metabolism doesn’t behave the way a generic calculator assumes it should.

This number becomes the foundation for calorie targets in your broader nutrition plan, whether the goal is performance, body composition, or recovering from a period of chronic underfueling.

Sweat & Hydration Testing

Sweat testing measures how much fluid and sodium you actually lose during training, which varies a lot more between individuals than most hydration advice accounts for. Generic advice like “drink 8 glasses a day” doesn’t mean much for an athlete who’s a heavy, salty sweater training in the heat. This testing builds a hydration and electrolyte strategy around your actual sweat rate instead of a population average.

How Results Shape Your Plan

Testing isn’t a one-time report you get handed and forget about. Results feed directly into your nutrition coaching, whether that’s adjusting calorie targets after an RMR test, tracking body composition changes over a training block, or building a race-day hydration plan from your sweat test numbers. If you’re working with Andrea on HYROX-specific coaching or endurance training, testing is often the first step before the plan gets built.

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