I was standing for a while last night, standing...standing...standing. Invariably, once I started moving around again, my joints were very stiff and sore. Of course that is obvious enough, but it made me realise that I didn't know WHY this happens. What is being released, or stored, or affected that the soreness(and sometimes numbness) occurs? is it a byproduct of blood flow? muscles? joints? synovial fluid?
I many be very wrong with this but doesn’t it have something to do with the fluid in your joints. Like you sit for a while and the fluid builds up so you are stiff for a few minutes till you walk it off. Again I could be wrong but I think I heard this somewhere.