Sit on Padmasana or Siddhasana. Inhale rapidly through both nostrils with the sound of Bhramara, the bee and exhale rapidly through both the nostrils making the humming sound.
You can carry the process till your body get perspirated. In the end, breathe through both nostrils, keeping your breath as long as you can and then slowly exhale from both nostrils.
The joy that brings the practitioner into the Kumbhaka is unlimited and indescribable. In the beginning, heat of the body is increased as the circulation of blood get quicker but in the end, body-heat is decreased by perspiration. Once the student has successfully learned Bhramari Kumbhaka, the Yogic student can easily gain expertise in Samadhi.
In the early morning, answer the calls of nature and sit for the practice. Practice Pranayama in a dry well-ventilated room. Pranayama requires deep concentration and attention. It is always better to have the practice in a steady posture. Do not keep anyone by your side to avoid distraction of your mind.
Before you sit for Pranayama, thoroughly clean the nostrils well. You can take a small quantity of fruit-juice or a small cup of milk or coffee even before the practice. When you finish the practice take a cup of milk or something light to eat after 10 minutes.
Practice only in the morning during summer. If there is heat in the brain or head, apply Amla oil or butter on the head before you take your bath. Take Misri Sharbat by dissolving sugar candy in water. This will cool your whole system. Do Sitali Pranayama also. You will not be affected by the heat.