> a 30min challenge to sit upright without doing anything in a chair challenge

Quakers call this "silent meeting."

For those that don’t know, the Quakers are like Zen Buddhism met radical Protestant Christians in the 1600s. There is no creed, no minister/priest/leader.

We sit together quietly for 60 minutes. If someone feels inspired, they stand up and speak. Then they sit down and the Meeting continues in silence. Some Meetings are silent from start to finish; others have speakers the whole time.

While there is no creed, people often speak about truth, equality, peace, and simplicity. I found it when looking for a belief system to pass on to my kids, should I have some.

If you’re curious, try it some Sunday. It’s an interesting experience.