To reduce your stress levels, you need to release more endorphins. Endorphins are connected with improved mood, and they decrease the level of the stress-causing hormone cortisol. Laughing can trick your nervous system into making you happy and increasing the release of endorphins. You can watch some classy comedy movie to laugh and release your stress.
If you have a stressful situation or you feel overwhelmed, try to take a break and listen to some relaxing music. It has been proved that playing calm music has a positive effect on your body and your brain, and it can lower your blood pressure and reduce cortisol levels.
Take a deep breath whenever you feel stressed and hold it deep for a few seconds. This technique can help you a lot. For an easy 3-5 minutes of exercise, breathe in and out slowly and deeply, concentrating on your lungs and chest.