I understand that hard days should not come the day before a longer run. But Saturday, I ignored the advice. My plan it to run my 4 minute hill repeats on Thursdays,  but, last week, I did not meet my plan. So I ran my hill repeats on Saturday, then went out for an easy 15 on Sunday. I've managed DOMS all this week. Finally, today, I only feel a little residual tiredness and/or sorenes coming down the stairs at work.

When I was a young man, I ignored all the rules of thumb and wondered why they even existed. Since returning to running at age 49, I've come to know very well why the guidance exists.