I think everyone knows that too much stress makes you feel bad. Many physical ailments such as headaches, tiredness and muscle tension/pain can be caused by stress. Did you know that repeated increased levels of the stress hormone, cortisol, can also cause weight gain? It can also cause depression, anxiety and irritability. It is important to keep your stress levels in check for both your physical and mental health.
My favorite stress buster is a workout. Between bumping up your body's production of endorphins (the brain's feel good neurotransmitters), serving as a form of mediation as well as all the other benefits of exercise (i.e. improved self confidence, improved sleep), any type of workout is a great way to manage stress.
Here are links to more tips on how to de-stress.
American Heart Association
The Chopra Center
The Huffington Post