Yup - that's my lowest mileage total in a LONG time. Since March. But for a good reason.
I've had a slightly weaker and much less flexible left leg for a long time (like decades), and I finally got sick and tired of managing it and the myriad of issues that seem to crop up from it. So I gave a cortisone shot to my rear (piriformis) a try, so as to stop that pesky muscle from pushing on my sciatic nerve.
The cortisone shot came with a few obligations. One was to take 4-7 days no running. Done (and my swimming may have improved a bit. Or not).
Second obligation was to take advantage of the next few weeks to retrain myself. Meaning all the injury prevention exercises I do anyway, but really being obsessive about form. I need to get that leg moving absolutely correctly, and unlearn all the little compensation habits I've ingrained over the years. The whole point of getting the shot was not so I could jump back into running training ASAP, but rather to reset my body to neutral, and then do some relearning. Which includes gradually ramping up the easy miles.
The running itself should be fun - my leg feels different. More springy and responsive. It's still slightly weaker than the right, but that makes sense. The muscles are getting the signals full tilt now, but they still need to build up. So I have a lot of stretching, side planks, and single leg squats and deadlifts in my future. Good thing. I was starting to get sick of swimming.