1st thing in the morning, after
exercise, or after being confined/
in the same position (like on an airplane, sitting at
the movies, or sitting for long at work), my legs don't comply at first when I go to get up. It usually gets better with a little time and motion.
I also sometimes get the sensation that cold water is running through my veins as I take steps and have other sensory nonsense going on in my lower limbs.