Even little more exercise can extend lifespan: study

No matter your fitness level, adding just a little more exercise may prolong your life, new research suggests.

"People think they have to start going to the gym and exercising hard to get fitter," said researcher Elin Ekblom-Bak, from the Swedish School of Sport and Health Sciences in Stockholm.

"But it doesn't have to be that complicated. For most people, just being more active in daily life -- taking the stairs, exiting the metro station early, cycling to work -- is enough to benefit health since levels are so low to start with," she said. "The more you do, the better."