anakinskywalker said:
So for quite a long time i was wondering if adrenaline is somehow connection to spirituality and if there's any way to use it for your own benefit, like maybe using adrenaline at will. Does someone know anything about this topic?
Adrenaline is a hormone produced by the adrenal gland. The chakras have associated glands, the solar chakra rules the adrenal gland. If it is possible, which I suspect it to be as well, then doing so would require the artificial activation through the central solar chakra.
Note however, that you wouldn't want to use this when it isn't necessary. Putting the body into "overclock" in unnecessary situations would often cause great fatigue and perhaps even injuries. When you put a machine in overclock for example, the machine functions at a higher potential workload at the cost of malfunction, and if temperatures aren't controlled then they can even catch fire. If complete control of the adrenal gland was possible, these considerations are necessary. You might be able to lift a car, but afterward find you shattered your spine beyond recovery.
The enemy apparently extract adrenochrome from the adrenal glands of young children who are stimulated by fear. They then use the chemical to rejuvenate their physical bodies, practically achieving immortality. I'm not sure if that is entirely true, but it might be. If it is, then immortality could be achieved through your own adrenal gland as well.