Turns out working up a sweat isn't just good for making you happier and calmer; it's also the secret to a better memory. The McMaster University findings could have implications for an aging population which is grappling with the growing problem of catastrophic diseases such as dementia and Alzheimer's. Scientists have found that six weeks of intense exercise--short bouts of interval training over the course of 20 minutes--showed significant improvements in what is known as high-interference memory which for example allows us to distinguish our car from another of the same make and model. The findings are important because memory
