I don’t like to think about breathing. It’s a job for my subconscious mind, and the more I’m conscious of it, the more I become concerned that I will stop breathing entirely. (I have a touch of sleep apnea, so this is not out of the question.) Which is why I was more than a little skeptical of Spire, the new health and fitness gadget and companion app. It wants to tell me all about my breathing: how often I do it, how well I do it and when I don’t do it.

I think I just held my breath the whole time I wrote that sentence.