The popularity of meditation/relaxation methods are at an all time high these days. You hear these terms being dropped from every guru walking the planet promoting a healthy way of life.
Meditation/Relaxation helps with concentration and focusing of your thoughts, which in turn helps decrease anxiety and stress.
For as long as I can remember, people around me would repeat that stress is a killer more than anything else out there.
The reason for this is that it stimulates the sensation not unlike the one we get when we are in danger, which for a certain amount of time is alright and is beneficial to survival.
However, in the uptight fast track world we are currently living in, having this emotional response to danger simulated day in and out that leaves us in a constant state of stress can become a real problem.