This is also known as bee breathing. It draws your mind away from negative and stressful thinking and calms you down.

• Locate some place private and quiet.
• Take in a few breathes slowly and naturally. While doing so keep your eyes closed.
• Now, inhale through your nostrils keeping your lips sealed. While exhaling, make a humming "MMMMM" sound.
• Continue doing so until you need to inhale again. Continue to bee breathe as long as you wish to.

In the advanced version of bee breathing, you need to press your fingers gently on your ears.

Video Demo

Please refer to the blog for more details on this activity