Answer:
You feel this sensation when you are dehydrated.
I have joy in bringing two together, but darning my existence! My life hangs by a thread, filled with ups, downs and resistance!
You can't keep this until you have given it. What is it?
What travels around the world without leaving the corner?
Which one of Santa's reindeer can be seen on Valentines day?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?