After my first sub 30 5K last Friday, I thought Monday's 10K would be a rubbish time, as it would be anti climactic after Friday's euphoria, and I still find running 10K to be intimidating. But Monday's 10K was actually a minute faster than my previous PB.
5Ks have felt easier lately. I wake up on a 5K day and think "Yay - only 5K today!" But I really struggled today. Really felt like giving up after the 4 km mark.
Looking at the stats I notice my heart rate was higher than usual for a 5K, and in fact my resting heart rate overnight was 69, which is at least 10 bpm higher than usual. Interesting! Maybe my body is processing something - maybe fighting off a bug.
I plan to do 8k on Friday as part of working up to 3 10K runs each week, so lots of rest today and tomorrow I think.