In Buddhism the jhanas are extremely high states of concentration where the meditator is completely absorbed into the object of meditation (e.g. the breath at the nostrils).There are eight stages of jhana. The first to fourth jhanas are absorbtion into a material object such as breath, picture, mantra, etc. The fifth to eight jhanas (or the formless jhanas)have no material object but a mental one, such as infinity of space or certain qualities of the mind.These states of concentration arise "automatically" when one's concentration on the object of meditation is strong enough and the meditator has been able to hold the concentration for a long enough time.The mind is then completely thoughtless and full of bliss. The second jhana is the most blissful of all, and celly seems really happy in the picture so I thought she might be there. In fact with practice the bliss can be cranked up to a level where it becomes almost unbearable.A thousand times stronger than an orgasm but it can go for hours.The jhanas are basically how the Buddha reached enlightenment.