Can anyone explain what I'm doing?

What is my ear doing? For the past few days, one ear or the other

Should I see a doctor or physical therapist about my knee doing

What is this? Is it dangerous? Should I go to the doctor?( more

Hands doing this weird popping thing. Any thoughts?

Finger doing this for 2 days. Any reason to go to the doctor

24m 190 pounds - My arm is doing this thing (video)

Do I need to be worried about my elbow doing this? It doesn't

Why is my knee making this noise? (Warning: gross noise)

Eyelid twitching

Why is my niece doing that, it happens to her one in each day

Twitchy eyelid...