Bhramari pranayam

sit comfortably,in sukhasana or padmasana,your back and neck straight.Breath normally.Close both your ears with your thumbs.keep your index fingers on your forehead near the agya chakra and the remaining three fingers on your eyes.Inhale slowly and fill your lungs with air.Then as you exhale slowly,hum like a bee.Focus attention on this sound.Repeat 10-12 times.
Benefits: counters mental problems like tension,stress,anxiety,insomnia and nervous weakness,all said to be the main causes of glucose imbalance in body.