A YouTube compilation that has been viewed more than two million times claims to be the most satisfying video in the world.
Using 31 clips, the video shows a series of supremely satisfying scenes, from a tree shredder to an egg separator, and from a drill bit rotating in slow motion to cookies being perfectly iced. (Scroll down to view full video).
It's hard to explain exactly what they have in common, but there are a lot of spherical objects, machinery, repetitive tasks, and processes being completed in a deeply fulfilling manner.
The online news aggregator Digg shared the video and wrote: "Have you ever seen something that makes your skin tingle and for some unknown reason provides you with a sense of unbridled peace and happiness? Gears working in perfect synchronisation, a cake frosted with absolute precision, marbles rolling so smoothly it hurts."
"Something that is just...satisfying? Well here's five solid minutes of that feeling.
It's been seen more than two million times after only two days online.