Dick Sandhaus, a healthy and fit 62-year old, says he never gave his balance a thought until he lost it. A wicked sprained ankle was the result. Now he practices balancing for a few minutes each day and urges his fellow baby boomers to do the same. "Rocking toes to heels and quadriceps stretches are things anybody can do if they have a floor," said Sandhaus, a self-described ex-hippie who dispenses fitness tips on his website, BetterCheaperSlower. … full story

Proline, a simple amino acid that recurs at the centre of proteins found in tooth enamel, makes teeth stronger and more resilient, according to a new research. University of Illinois-Chicago (UI-C) researchers compared proline repeats in amphibian and animal models and discovered that when the repeats are short, such as in frogs, teeth will not have the enamel prisms that are responsible for the strength of human enamel. Conversely, when the proline … full story