KIT ZONE
HELEN WEBSTER
220’seditor is also a qualified open-water swimming coach.
ROB SLADE
220’s features editor and resident adventure seeker.
KATE MILSOM
220’s staff writer and a keen endurance athlete.
MATT BAIRD
Has spent years testing tri kit and accessories for 220 .
JACK SEXTY
A strong age-grouper focusing on top-end gains.
JAMES WITTS
He’s a published author writing about sports science.
LUMEN METABOLISER
£249 A pocket-friendly metaboliser tracker to improve health
When is a vaping device not a vaping device? When it’s the Lumen metaboliser tracker, which is designed to improve your health. It’s a pocket-friendly unit that promises to revamp your metabolism by telling you whether you’re veering toward fat-burning or carb-burning.
It works by breathing into said unit, which broadly calculates your respiratory exchange ratio. This is the ratio between the metabolic production of carbon dioxide and the uptake of oxygen. For the Lumen, the focus is on measuring carbon dioxide only. Either way, when you burn fats and carbs for fuel, both generate CO2 and release it into your bloodstream, but at higher values when burning carbs. This translates into CO2 levels in your breath, which the Lumen measures.
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