For the second exercise, I had to stare directly into someone’s eyes without looking away - even for a split second - for 20 minutes in a row. If you’ve never tried this, you should. It’s very difficult. Unfortunately, they first paired me with a 12-year-old girl. I was sure I would freak her out if I stared into her eyes for 20 minutes (it’s an intense experience), so I made faces when the instructors weren’t looking and waited for them to pair me with an adult. After half a dozen failures, I finally managed to maintain eye contact for 20 minutes in a row, without a single glance away or a long blink.
https://www.lesswrong.com/posts/qwdupkFd6kmeZHYXy/build-small-skills-in-the-right-order