Summer in NYC
@Henri
Health / longevity: break up sitting, not just “exercise more”. A new Medicine study of 91,000+ people over ~12 years linked longer uninterrupted sedentary time with higher cancer mortality; replacing sitting with light movement was associated with lower risk (for workdays: 2–5 minute walk breaks, calls while walking, errands between deep-work blocks).
Few takes on AI - June 2026
Up until the last year, developing an app took enough time and expertise that it tended to be done for multiple people and repetitive use cases.
But AI coding capabilities have gotten so good that in literally a few minutes, you can make a tailor made app.
I tried out doing just that, using a train ride to make an apartment comparison app for one time use, just for me - few snapshots below.
This month I started using ChatGPT to send me a daily morning briefing. I chose the specific set of sections and style I wanted, and have been able to iterate on the format. I'm finding what is essentially my own morning newsletter to be a great addition to my news routine, and recommend creating your own
The best burger, fries, and shakes place in the country in my view was Edzos near the Northwestern campus. When it closed a year or so ago, I looked up what the chef was doing, saw he’d started a substack, and asked him how to cook mushrooms. To my surprise, he responded! Here’s the secret to Edzo’s mushrooms