1 . and 2 . Finite in the sense that we all possess a certain amount of what Taoists term prenatalpreheaven energy . Infinite in the sense that we are capable of drawing on postnatalpostheaven energy . But in a general sense , one can perform energyrelated workhealingmeditation and feel ' drained of energy ', or perform other types and feel ' fully charged of energy ', so I think there is definitely different types of energy and different means of circulating , storing , and using that energy . 3 . In regards to the astral plane , and astralrelated work , there is some sort of projection or transferrence of consciousness to that plane , so we using energy to ' get there ', but i ' ve never personally felt drained of energy afterward . Since on the physical plane when we are utilizing chakras or other ' etheric or psychic ' organssenses we are bypassing the physical and directly utilizing these etheric or psychic organs , whereas in the astral we are going ' to the source ' and not needing the physical at all . 4 . It is probably possible healing , charging , etc . because everything is energy there so it is easier to transfer , manifest , so on . I met a native american shaman once who says he does ' dreamastral healing '. And personally having done energywork in dreams and astral plane I found that the energy level was like 100 x more intense and energetic so it is clearly more potent there 5 . I don ' really know . Even on the physical , i ' ve only seen the auras of living beings