Improv your Run
Even with a well written script, sometimes the actors just need to improv to make a scene work. Running is much the same way. Tuesday could be the day you plan to go to the track to do some speed work. Tuesday comes and your body says to take in slow.
Your legs and lungs can dictate what is appropriate on any given day. Listen to your body for signs of when rest is needed or when you can go guts out.
Today was day 8 in a row for running and my left achilles is saying you need to take tomorrow off to be ready for Sunday’s 18 miler. Enough said. Tomorrow off it is.