Stress is a state of mental tension and worry caused by problems in your life, work, etc. If you're feeling overwhelmed by a stressful situation, try taking a break. Call a friend and talk about your problems. Good relationships with friends and loved ones are important to any healthy lifestyle, and there's no time that this is more evident than when you're under a lot of stress. A reassuring voice, even for a minute, can put everything in perspective A short walk around or simply standing up to stretch during a break at work can offer immediate relief in a stressful situation. Getting your blood moving releases endorphins and can improve your mood almost instantaneously.