The act of smiling – even if you don’t feel like it – releases chemicals into the body which lift your spirit and keep you young.

Smiling is good for your overall health and smiley people are thought to have more friends and to make more money. The wider the smile, the better and you can get a good endorphin boost by smiling 50 times in row.

So give smiling a try — or you can just wear one of these crazy prosthetic smiles from artist Sascha Nordmeyer.