I used to get tingling in my ring finger and pinky if I slept too long with my elbow sharply bent. I'd wake up in the night with bad tingling and numbness on the side I'd been sleeping on with my elbow bent (sometimes right side, sometimes left). It would also tingle during the day at work at times (I'm on the computer all day).

I did some research online and diagnosed myself with cubital tunnel syndrome (ulnar nerve entrapment). I bought a special foam pillow that is shaped properly to support the neck of side sleepers so that I wouldn't have to bend my arm up to support my head while I was sleeping. I also made a concerted effort to sleep with my arms as straight as possible, based on the recommendations I read online. Problem solved! (This all happened around 2 years ago and has not recurred.)

I mentioned all this to my physician at my annual physical, and she was impressed. She agreed with my diagnosis and what I did for it, and she advised so long as the problem did not recur, to just keep that up. So, it might not be what you are doing during the day at all, but what you do when you sleep!

Hope this helps,
Emily