Norovirus - wikipedia, the free encyclopedia, Norovirus, sometimes known as the winter vomiting bug in the uk, is the most common cause of viral gastroenteritis in humans. it affects people of all ages. the virus. How to tighten your stomach muscles - salad dressing to, You must know, and realize, that the idea of total concentration on tightening up the stomach muscles is an oxymoron as it just does not work as well when trying to. Stomach aches: 5 things parents should know — health hub, Stomach aches: 5 things parents should know the difference between a regular tummy ache and something serious.