Welcome to The Quantified Porch Series

* I&rsquo;ve been tracking things. More things than I expected to, honestly. Blood glucose. Steps. Sleep. What I eat, when I eat it, how much. Heart rate variability &ndash; which I couldn&rsquo;t have defined two years ago and now check most mornings. At some point I looked at the devices on my wrist and nightstand and thought &ndash; there&rsquo;s a lot going on here. Worth talking about. So…