My sister and me bought a thermal camera and we made this little experiment with an ice bath, in which i put my hand in. We thought it was really cool how you can see the blood turning cold in the veins. And also the hand warming up afterwards. The watermark is sadly from the camera (because its not the most expensive) but you can easily edit it out. theres also an already shorter version attached with the best parts. We hope you like our video bye bye :) have a good day/life