Celestial Herbal Tea is Killing Me

I noticed a few months back that I started seeing trails or tails (not sure what to call them).  When I waved my hand in front of my face I could see trails of my hand/fingers.  This of course freaked me out!  I thought I was dieing.  Still not sure what it is.

I have narrowed the cause down to 4 different reasons.

1. Staying up way too late and getting little sleep.
2. Staring at a computer for hours on end.
3. Krill oil.
4. Celestial Herbal Tea.

The first time I saw the trail tails I had just finished a nice, warm cup of Celestial Tea at night after I had spent a day on the computer.  I was also taking a ton of krill oil which is like taking fish oil but better.  I think I still see the trail tails from time to time but I am not 100% sure.

Have you ever seen trail tails of your hand like you are *high on some drug?  What do you think is causing this?

*I have never taken illegal drugs.  I have never been high.