Eastern Perspective

If you are more into Eastern religion, this explanation may be helpful: Meditation and visualization exercises are enhanced. You may also hear a wind rushing or whirlwind sound in your head or one or more tones. This is a normal effect and is a sought-after effect in meditation. If you take the water again the next day, the effect will not be as strong, since the effects of the first time are likely still in effect for some time.

You may feel a buzzing in your hands and/or feet, a "hatband" effect around your head (crown chakra opening), a discernable feeling of electrical activity in the brain, pressure in both temples, or something that feels like static electricity "all over your body". In addition you may feel a warm sensation over your chest area typically associated with a heart chakra opening. You may feel tension slightly above and between the eyebrows commonly called a third eye opening, sometimes perceived as a slight "headache".  This is where it got the nickname "Rainbow Bridge" as the Tibetans called it.

Some feel a warm and electric sensation in the root (base) chakra area and effects associated with this chakra often "open the gate" to some very blissful experiences. Some have a kundalini experience. Right brain activity also seems to be very strong as well as the left frontal lobe. Many people use it topically on the chakra points, as well as blocked acupuncture points. Your aura extends further than usual.

The room may suddenly seem brighter just after taking it. There may be subtle perceptual changes in any/all of your senses. I see this as clairvoyance - as in clear seeing as opposed to hallucination. Oddly, the pupils don't dilate to cause this.

Many sensitive people can feel it without taking it internally. Some can feel it while it's still shielded  inside a can, so it stands to reason that it is "radiating" its energy. It can affect a room full of people while it's still in the bottle. It also seems to affect nearby water in containers. I can feel it too, but I have been unable to detect this emanation with electronic devices including Geiger counters, RF detectors, magnetic field detectors, etc..

Also see Oneness and "Down the Rabbit Hole"