Today I went out for a slow couple of miles and my legs are tired. So I left it at that for today, at least I've had a loosening up and the rest of the day was quite busy so that was probably enough.
I have noticed that the next time I go out after a long run my heart rate is low. This is good and todays run proved it again but I don't know why? If anyone has any theories about this, I'd be pleased to know.

2 miles
Time 22.18mins
Average HR 122
Peak HR 139
11.09 pace