Which ashrams offer seva or volunteer stays?

At Isha Yoga Center, you can stay in the volunteer dormitory if you've completed Inner Engineering, including Shambhavi Mahamudra Kriya initiation. Volunteering runs from about 8:30 am to 8:30 pm, and cottage guests are encouraged to volunteer 2–3 hours a day. Isha also runs Sadhanapada, a 7-month residential program of sadhana and seva with no fee; food and accommodation are included. At Sivananda ashrams, every guest does one hour of karma yoga (selfless service) a day. Parmarth Niketan says its ashram is for pilgrims who come for sadhana, meditation, seva and satsang.