For the last couple of months I’ve had an issue with my feet / ankles. It only happens when I first get up from bed or when I get up from sitting for any length of time. When I stand, it’s almost like my ankles won’t move and I can’t quite walk - for the first 30 seconds I have to limp. Once I get going I’m fine (I was walking in the Peaks last weekend and gym twice a week). It feels more than just normal stiffness, and it’s every single time I get up from sitting, even if it’s only 5 minutes, regardless of position. There’s no pain, although I do, very occasionally, get a very intense, hot pain in one ankle which doesn’t seem to relate to movement at all - usually happens when I’m sitting still.
Any ideas? Or just getting older (I’m 45)?