A Standing Baba, or Khareshwari, is a Hindu who has vowed to stand, not sitting or lying down even to sleep. The vow is a form of Hindu Tapa (or Tapasas), a self-inflicted corporal punishment intended to help bring spiritual enlightenment. Khareshwari are primarily found in India, but are not limited to that country.
The length of the vow is unclear from available references. One source says that the vow lasts for twelve years. Other sources do not attach a specific timeframe.