I like to keep notes about the gigs I play with my various bands. Sometimes I log very detailed entries about changes we need to make to our gear or sound settings for the next gig, other times it’s just a few quick words so I can remember who came out to see us or…

I first started using Heart Rate Variability (HRV) to track my recovery from a concussion that I sustained while out mountain biking. HRV is a possibly useful metric to track overall health, stress levels, etc. I have a few years worth of (not entirely consistent) HRV data as a result of using Marco Altini’s fantastic…