can you see it?

I've got this circulation issue that drives me crazy at times.  While snow machining for my birthday my stupid middle finger would not recirculate blood.  I squeezed it and kept it on the hand warmers but to no avail.  This was 2 hours later when it was starting to get better.  It's weird not feeling parts of your body at times. 

I showed my kids and asked them to squeeze my finger (not pull it, he he) and they had a great time helping me.  The unfortunate part is now they have each tried to convince me that they have similar issues but they don't.  I forget what this is called but it's quite annoying.  It happens in my toes too but more so in the summer when I wear rubber boots fishing.  Go figure on that one.