There will be occasional times where a certain part of my body feels like its pumping something and when i look at it.... i can see my skin moving... like a few minutes ago i was eating dinner and my knee started what felt like pumping... i could feel it move and it felt weird... it felt like there was something moving inside because when i looked at my knee... i could see it bobbing up and down like a heartbeat or something.... its worse when i feel it on my A**... lol it feels like someone is moving a straw or blowing liquid in my legs and whatever part it is that moving... it eventually goes away but i cant stand the feeling...