You cannot master this asana in the first attempt. You have to learn it slowly and steadily without straining your neck and back. The presence of a yoga instructor would be the best thing to start off this asana. After many attempts and by the use of props like the wall you can be a maestro of this asana.
As the blood flows to the brain it improves the circulation of blood and gives a calming effect to your body and helps in relieving stress. In comparison with all the inverted poses this pose also helps in soothing your tense nervous system. The pressure applied on your shoulders and head make them stronger. Your brain receives fresh supply of blood making it more appropriate for better health. Circulation of blood makes you prone to fewer diseases. It helps in removing fatigue from your body to relax you.
The problems and ailments you face with your chest like bronchitis, asthma and breathlessness can get a sense of relief by this asana. Your digestion improves by this asana and stimulation is provided to the pituitary and pineal glands. The headstand helps in strengthening your arms, legs and spine as the entire pressure is put on them. The abdominal organs are toned by this asana which also strengthens your lungs. This asana is very therapeutic if you are suffering from conditions like asthma, infertility, insomnia and sinus.