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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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The bike features a sporty city steer and an integrated touchscreen in the frame
The bike features a sporty city steer and an integrated touchscreen in the frame
The optional
The optional "bambooman" front carrier can be quite handy (photo from another bike, my VanMoof S5)
Comparing data from sleep analyses (two nights with clearly a different pattern)
Comparing data from sleep analyses (two nights with clearly a different pattern)
Elfstedentocht - where men become heroes
Elfstedentocht - where men become heroes
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 Apple Watch Series 2
The Apple Watch Series 2
The back has a nice shape that makes it disappear in your pocket.
The back has a nice shape that makes it disappear in your pocket.
Smile inducing speed advantage over other traffic during rush hour
Smile inducing speed advantage over other traffic during rush hour
Biostrap on the wrist - now you see me...
Biostrap on the wrist - now you see me...
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
The route through Friesland
The route through Friesland
During autumn the days became shorter and many rides where done during dusk or dawn. It's nice to see the sun come up or go down.
During autumn the days became shorter and many rides where done during dusk or dawn. It's nice to see the sun come up or go down.
The LG G Watch running Android Wear
The LG G Watch running Android Wear
Heart rates during the two performance nights, left my debut, right the second performance
Heart rates during the two performance nights, left my debut, right the second performance
Measuring heart rate at different speeds on both a normal and electric bike
Measuring heart rate at different speeds on both a normal and electric bike
Front hub electric motor
Front hub electric motor
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.
It was really cold during this ride in December. My drink bottles, gloves and shoes where frozen!
It was really cold during this ride in December. My drink bottles, gloves and shoes where frozen!

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