Digestive, skin, bladder and kidney problems, fatigue and headache can result from not enough water

In a recent study, it was found that synchronising with others while dancing raised pain tolerance. It also encouraged people to feel closer to others. 

The science on salt is polarized, slightly more than half of papers support the idea that salt is bad for your health 

Because there are so many fitness fads out there it's often very hard to know which are really effective and those which are not.