A new study that's challenging the popular idea that we should drink eight glasses of water a day for health purposes shows that a 'swallowing inhibition' is activated by the brain after excess liquid is consumed. This inhibition mechanism helps maintain tightly calibrated volumes of water in the body.

The lead scientist has pointed out that if we just do what our body demands us to, we'll probably get it right. In other words, it is the best practice to just drink according to thirst rather than an elaborate schedule.

Building on a previous study, the researchers asked participants to rate the amount of effort required to swallow water under two conditions; following exercise when they were thirsty and later after they were persuaded to drin ...

According to a new study on human behavior, 90% of the population can be classified into four basic personality types: Optimistic, Pessimistic, Trusting and Envious. However, the latter of the four types, Envious, is the most common, with 30% compared to 20% for each of the other groups.

If you're the type of person who doesn't mind what you achieve, just as long as it's better than everyone else, then you're considered envious. Optimists, which account for 20% of the people tested in the study, are those who believe that they and their partner will make the best choice for both of them. Pessimists were defined in the study as those who selected the option which they see as the lesser of two evils - they accounted for 20% as well. The trusti ...

Seeing through objects may seem like something straight out of a comic book, but researchers have found a way to make entire animals transparent – from their brains to their bones. The method lets fluorescent proteins visibly shine through bodies, lighting up entire vascular systems (above) and other structures.

To produce such light shows, researchers treat euthanized rodents with several organic solvents to remove the water and lipids that made them opaque. The technique is dubbed uDISCO because it’s a variant of the original DISCO technique, which stands for 3D imaging of solvent-cleared organs. This technique allows the highest resolution images yet for a whole body, its creators report online today in Nature Methods, and it can create ...