They say that laughing does not just boost the immune system and lessen stress, it can also shave off those calories! Researchers from Vanderbilt University locked people in a room to watch comedy clips on TV and found that those who laughed used 20 percent more energy than those who didn’t. So, start laughing for 10 to 15 minutes a day and you will be able to burn off 2.2 kilograms of calories a year! Yeah, yeah..and December is just a few weeks away…parties, merrymaking, a lot of stuff to eat...