Exercise Makes You Smarter, Montreal Heart Institute Study

A regular exercise routine can make you fitter than ever – mentally fit. In a new study, previously sedentary adults were put through four months of high-intensity interval training. At the end, their cognitive functions – the ability to think, recall and make quick decisions – had improved significantly, says Dr. Martin Juneau, director of prevention at the Montreal Heart Institute. "If you talk to people who exercise, they say they feel sharper. Now we've found a way to measure that," says Dr. Juneau.