opposite day every day
A friend and former colleague of mine had a thing she did. She called it exercising her brain. I’m pretty sure she saw it on a website somewhere. Or maybe she was up late one night and bought a multi-CD box set (yes, it was that long ago) on QVC. Maybe she lost an ill-advised New Year’s Eve bet. I honestly don’t remember how it started.
I also don’t remember now if it was weekly or monthly, but for one whole day during that period, she would do everything with her opposite hand. Brush her teeth. Write. Eat. You name it, she did it. And I’ll admit that I derived just a little sadistic pleasure from watching the show.