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Health on Willem's Blog

Swimming and cycling with Apple Watch

Different activities in the workout app in watchOS

Sep. 27, 2018
This month I tested the newest watchOS while swimming and cycling.

This month Apple launched a new Apple Watch series and released an update to watchOS. The focus of the smartwatch is more and more gearing towards health and fitness. This made me curious, how well does Apple Watch work for different activities?

Enjoy a festival without alcohol

Alcohol-free beer at Rock Werchter

July 10, 2018
This year I didn't drink alcohol during Rock Werchter, leading to interesting observations during the music festival.

Last weekend me and my brother went to Rock Werchter, a multi-day, music festival in Belgium. Over 140 thousand visitors enjoy world famous artists like Pearl Jam, Nick Cave, Artic Monkeys, Noel Gallagher, The Killers and the Queens of the Stone Age. This year I didn't drink alcohol during the festival, leading to some interesting observations...

Listen to your body

Why I stopped using health and fitness sensors

May 17, 2018
Using health data gathered by sensors and wearables I learned to listen to my body. Now I have stopped using bluetooth sensors all together.

A good customer of mine was once a physiotherapist, he told me about people asking him to "feel their muscles" to tell them how they where doing. "Crazy!" he told me: "I can never feel better than the people themselves, if they only would listen to their body". This caused me to question the health and fitness sensors I use.

Outside the comfort zone: amateur acting

Wearing an heart rate monitor during my debut performance

Apr. 18, 2018
This month I strapped myself with sensors during a little experiment outside my comfort zone: I debuted as amateur actor!

This month I made my debut as amateur actor. I am no Hollywood star, nor do I envy to become one. But I do like crazy experiments and operating outside of my comfort zone often leads to new and refreshing insights. I took part in an amateur drama play and - in the name of science and fun - strapped myself with sensors to measure what happened to my body.

Commuting by bike

One week (240KM) on the VanMoof Electrified S

Dec. 2, 2017
One week on the VanMoof Electrified S E-bike testing it for commuting and comparing it to a normal bike.

For a few years now, I commute to work using a bicycle. I have lost more than 15KG since I stopped using my scooter. This week I tested a VanMoof Electrified S, an electric bike with an industrial, minimal design. Is it any good? How does it compare to a normal bike? Will an electric bike make you lazy? Read along to find out!

Collecting health data with Biostrap

Wearing a clinical-grade photoplethysmography (PPG) sensor for a month

Nov. 15, 2017
Wearing a clinical-grade PPG sensor for a month to collect advanced biometrics from my wrist.

Most wearables (smartwatches, fitness trackers, etc.) use very basic sensors to capture heart rate. Their signal is binary: just counting beats. Biostrap is different, instead of just checking pulses, it captures a high-fidelity PPG waveform. These waveforms are the same kind that doctors use, making me wonder what I could learn from them!

Fietselfstedentocht 2017

Cycling the 235KM bicycle tour through Friesland

June 30, 2017
Cycling the 235KM long Fietselfstedentocht through Friesland

This month I cycled the Fietselfstedentocht, a 235KM tour through Friesland. This tour brings you through various Frisian cities throughout one of the most Northern provinces of the Netherlands. The tour was first organised in 1912 and has grown to become legendary due to its history, challenge and popularity; well worthy of a blog post!

Smartwatches vs Mechanical watches

Why I still wear mechanical and why smartwatches have potential

Apr. 30, 2017
Why I still wear a mechanical watch and why smartwatches have potential.

Technology has come a long way since the first computer. Smartwatches today are very much an achievement of miniaturisation of technology. I recently used an Apple Watch Series 2 to find out if technology has come far enough to replace my mechanical watch, today I share you my findings.

One year of cycling

GPS recording an entire year of bike rides using Garmin and Strava

Dec. 31, 2016
GPS recording an entire year of bike rides using Garmin and Strava.

One year ago I started recording all my bike rides, including commutes, short grocery trips and long Gran Fondos. I equipped my bicycles with Garmin Edge computers that recorded location (GPS), speed, cadence and my heart rate. I covered more than 7683 kilometers during 320 hours of riding. It's time to review all the data and share some photos I took along the ride!

Harvesting boredom to let creativity flourish

using the Punkt MP01 dumb phone

Oct. 1, 2016
What does it mean for my state of mind and creativity if I am no longer be constantly connected to the Internet using a smartphone.

Smartphones are everywhere in the modern society we live in today. Through our 4G and WiFi connections the internet is just one tap away. In fact, it is so close that it feels like a natural extension. But is this wealth of information all good or does it have a downside too? It seems like an interesting experiment to go app-less for a while and solely use a dumb phone.

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Wahoo TICKR, waist worn strap, measuring heart rate in realtime
Wahoo TICKR, waist worn strap, measuring heart rate in realtime
The Magnetic Charging dock is a fancy solution to an annoying problem: the constant need to charge the smartwatch
The Magnetic Charging dock is a fancy solution to an annoying problem: the constant need to charge the smartwatch
Apple HealthKit aggregating data from different sources and devices
Apple HealthKit aggregating data from different sources and devices
Part from the script with my first few lines of text, me playing
Part from the script with my first few lines of text, me playing "Gerard"
The nervous system (image from Wikimedia)
The nervous system (image from Wikimedia)
Apple Watch on the wrist showing current temperature, time, heart rate and access to mail, messages and music
Apple Watch on the wrist showing current temperature, time, heart rate and access to mail, messages and music
First gran fondo was cycling around the Dutch
First gran fondo was cycling around the Dutch "Markermeer", a 208.5KM ride.
VanMoof Electrified S
VanMoof Electrified S
Comparing the quality of sleep during two different nights. Being awake more often reduces quality of sleep.
Comparing the quality of sleep during two different nights. Being awake more often reduces quality of sleep.
Recovery after an heavy Thursday night can take up to days
Recovery after an heavy Thursday night can take up to days
Yep, it's me. :-)
Yep, it's me. :-)
Rear light is integrated under the seat post
Rear light is integrated under the seat post
Histogram of time and heart rate, showing how long (% of total time) a given heart rate was measured. (blue is electric, red is normal)
Histogram of time and heart rate, showing how long (% of total time) a given heart rate was measured. (blue is electric, red is normal)
That smile is not because of the fantastic Dutch weather... it's because of that rocket disguised as bike
That smile is not because of the fantastic Dutch weather... it's because of that rocket disguised as bike
In case you're still in doubt: electric mobility is the future and is here to stay.
In case you're still in doubt: electric mobility is the future and is here to stay.
Biostrap sensors size compared to an Apple AirPod
Biostrap sensors size compared to an Apple AirPod
Elfstedentocht - where men become heroes
Elfstedentocht - where men become heroes
Oh boy... there is no way back when you're face is all around town!
Oh boy... there is no way back when you're face is all around town!

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