It's painful and tiring.
But it is also good for your health, both physically and mentally.
And highly addictive.
Once you start pounding the pavement or hitting the treadmill you will be hooked.
Admittedly at first you will feel pain and exhaustion, but that will pass.
Many people turn to running, particularly at this time of year when new year's resolutions are still in place, for weight loss.
This vigorous cardiovascular exercise allows a runner, at an average speed, to burn about 420kJ over 1.5km.
Being able to burn so much energy in such a small amount of time, and the fact running is accessible, makes running such an ideal way to shed those extra kilograms.
All you need is a good pair of shoes.
Once you start you will find that you won't be able to stop, it will become part of your weekly, if not daily ritual.
You will go from 1km to 10km fun runs and half marathons.
The physical results will drive you to run further, but the endorphins will make you enjoy the actual activity.
Runners often talk about a "high" they feel after running a long distance or in a good time.
This euphoria comes from a beta-endorphin release, triggered by the neurons in the nervous system.
This endorphin, intended to alleviate the pain that comes with running, creates a feeling of extreme happiness and exhilaration.
This is how people become hooked.
So if losing weight, getting fit and healthy and becoming happier in life are among your new year's resolutions, or you're just looking for a way to shake life up a bit get running.
First run around the block or for a few minutes on the treadmill.
Start small and work your way up.
What: A group of runners, joggers or walkers who meet weekly to cover distances of 2 or 5km.