I have a friend who is a comedian/hypnotist and he said that is very easy to do. If you've ever seen a comedian/hypnotist one of the things they tell their "subjects" is that the room is very hot. They will start panting &sweating. Their body temps are going up.It all has to do with the power of your brain. It's amazing what your brain can do. I just wish I could control mine all the time!
When you come to the edge of all the light you have known & are about to step out into the darkness, FAITH is knowing there will be something for you to stand on or you will be taught to fly. -Unknown