There’s a specific kind of quiet that comes over a room when you finally cancel a subscription you’ve been paying for three years. My phone screen glowed on the kitchen counter, my finger hovered, and my inner competitor — the one who nearly made an Olympic heptathlon team and has never met a sunk cost she liked — whispered, “Are you sure?” I was. The Garmin CIRQA had been living on my left wrist for six weeks by that morning, and it had quietly made my Whoop membership obsolete. I didn’t expect this. When Garmin announced its first screenless band…