After injuries and Covid last year, I gradually got back to a running pattern with which I was happy. It suits my agenda, body and expectations of what I wanted running to achieve. This pattern is 3 x8k runs a week on Monday, Wednesday and Friday. Occasionally, I’d do one 10k on Friday.
Then on Thursday last week, a rest day, it was sunny in York and I decided to walk my 8k run just to be outside. When I’d got about halfway round, I began to feel really tired. My legs felt heavy even though I was just walking. Realising I was 4k from home, I decided to have a rest and sat on Millennium Bridge over the river. My legs were shaking and I even contemplated phoning my better half to collect me in the car. Instead, after the rest, I slowly walked the rest of the way home.
I felt very tired. No discomfort, just fatigue. I decided to skip the Friday run (the next day) and rest until Monday.
Yesterday (Monday), feeling a little anxious that the fatigue would be back, I decided on a 5k rather than the usual 8k. All went well. Legs didn’t feel heavy (apart from the frequent first five minutes lurgy) and my time was slightly faster per km (5’30”). So tomorrow, intend to do 5km again and see. If all ok, will possibly do 8k on Friday.
So my possibly erroneous conclusion is that the 8km walk the day following the 8km run was too much for my old legs and I need the rest!