Are there any references in Vedas or Yogic scriptures about techniques for meditation. We keep hearing how
Siddha Yogis are able to meditate constantly without attending the needs of the physical body. How can one attain the spiritual level of such yogis? How are they able to overcome bodily needs which can be fatal if ignored (by a normal human being), after a certain period of time?
Is this spiritual knowledge available in the scriptures?
One such example is "Ram Bahadur Bomjon". Although he is a Buddhist Monk,but there are plenty of yogis in Sanatana Dharma, who have been able to achieve same heights.
According to Wikipedia,
Ram Bahadur Bomjon
Ram Bahadur Bomjon (Sanskrit: राम बहादुर बामजान) (born c. 9 April 1990, sometimes spelled Bomjan, Banjan, or Bamjan), also known as Palden Dorje (his monastic name) and now Dharma Sangha, is from Ratanapuri, Bara district, Nepal. Some of his supporters have claimed that he is a reincarnation of Gautama Buddha, but Ram himself has denied this, and many practitioners of Buddhism agree that the Gautama Buddha has entered nirvana and cannot be reborn.
He drew thousands of visitors and media attention by spending months in meditation.