TEUN.
AI-generated image: me in race kit with my fist raised, sitting on a chrome rocket fitted with inline-skate wheels on an indoor skating track.

Inline speed skating · 100 m / 200 m sprint

Sprinter.
Type 1. Open book.

I race the 100 m and 200 m in inline speed skating: the events decided in seconds. I do it with Type 1 diabetes and a once-stubborn thyroid, and I publish the journey as I go: what works, what doesn't, and what the numbers actually say.

AI-made image · the numbers on this site are real

The one-minute version

The story so far

In 2014, glandular fever knocked me out of training for months: the first lesson in respecting recovery. In October 2018 came the big one: I was rushed to hospital in ketoacidosis and diagnosed with Type 1 diabetes. From that day, every training session has also been a blood-glucose problem to solve.

Instead of scaling back, I engineered my way forward. In 2023 I moved to a DIY closed loop: a glucose sensor, my phone and an algorithm dosing insulin around training and sleep. In late 2025, after years of quietly elevated thyroid values, treatment finally got my thyroid back in range, and energy, recovery and glucose stability all turned a corner.

Now I'm racing a fully planned sprint season, including the national championship on the piste, while a self-built platform ties together my glucose, sleep, heart-rate and training data and helps me decide when to push and when to back off. Everything I learn lands here.

Journal

What the data is teaching me

Open, data-driven notes from training and living with Type 1, published when they're solid enough to share.

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