I am the parasite who travels two by two.

... joints. It's bad; hard to sleep, stand for long periods of time, sit comfortably, etc. I can't exercise and even yoga is out depending on how badly I'm hurting that day. My doctor (from a drop-in clinic) was initially concerned about rheumatoid ...

http://ask.metafilter.com/245693/I-am-the-parasite-who-travels-two-by-two