I say 'surprisingly' because I am so unused to any physical exercise that everything is new to me! I did w8 d1 this morning and I was feeling so good that I continued running through part of the cool down period too, and then stopped abruptly at my front door. My legs and especially hips are now super stiff and sore so I am regretting not having a cool down walk. Learn from my fail! π
Cool down is surprisingly important: I say... - Couch to 5K
Cool down is surprisingly important


There are many times we become wise after the event during our running journeys, you are not alone. Good thing you noticed and have taken note. Stopping quickly after a long run can also mess with your blood pressure and cause you to faint, as a fellow runner discovered mid-run not so long ago when he paused to chat to a friend. Down he went.
Repeat your post run stretches this afternoon, but ease into them gently as your muscles are cooler now.

That's a good tip, though I must confess I have not been stretching at all! Time to look after myself a bit if i want to continue to cover greater distances!
I do these two sets of stretches religiously before and after my runs and they really help.
pre-run: runnersworld.com/training/g...
post-run: nhs.uk/live-well/exercise/h...

Thank you for these links, I will start stretching!

Stretching immediately after every run, nhs.uk/live-well/exercise/h... while muscles are still warm and supple, pulls out contractions, avoiding carrying tensions into the next run and also improves recovery by improving blood flow, as recommended in the guide to the plan.
Many people do not hold their stretches for long enough or put enough effort in. Hold post run stretches for 30 seconds and make sure the pull is strong enough to be on the verge of discomfort.