I started my 10-mile run but quickly realized I didn't have a lot of energy, and I aborted my run and walk/jogged home for a distance of 3 1/2 miles. Last Saturday I ran out of energy after 13 miles and mostly walked the last 2 miles to home. I took a day-off from running on Monday but was active in the yard that day and yesterday. Yesterday, I was on my feet for about 6 hours replacing the sod in the trench I dug last week, mowing lawns, rototilling my garden, and planting trees, plus working 6 hours at the college where I'm employed. Today it all caught up with me, and my body said, "Whoa, let's go home." My wakeup HR was 51, still a bit high.
I've had good runs for the past several weeks, having brought my long run from 10 miles up to 15 miles and my medium run from 8 miles up to 10 miles and my short run from 4 miles up to 5 miles. It's about time for my body to go into a slump while it recovers.