In today's health matters, when it comes to your workout, the intensity of it, may be more important than the length.

A new Danish study says the intensity of exercise not so much the duration is what's important in terms of improving your chances of living a longer life.

Researchers found men who bicycled at high levels of cycling intensity lived more than five years longer than those who exercised at lower intensity levels. For women high intensity cyclists lived nearly four years longer than low intensity bike riders.

Current guidelines do recommend that we get about 30 minutes or more of moderate physical activity every day.

Now the most beneficial levels of intensity and frequency haven't been established yet.