I've found this on amazon, it's basically a reply to a reply of a review-comment: Typical complaints heard from Q-Link users include "feeling hyper," headaches, insomnia, dizziness, anxiety, disorientation, palpitations, hypertension, sweating, digestive problems and chest pressure. The energetic reason for this is well-known: the Q-Link works by forcing energy up from the left side of a chakra at the base of the sternum - often called the "4th chakra" - to the left side of the chakra at the center of the forehead - often called the "6th chakra." Amongst other functions, the 4th chakra controls pancreas, stomach, duodenum, gall bladder, lower respiratory, breast and heart energy. The 6th chakra influences the energy of the autonomic nervous system, the frontal lobes of the brain, the endocrine glands and sensory systems. The Q-Link stimulates the 6th chakra while weakening the 4th chakra. For people whose 6th chakras are under-functioning, this can make them feel good - just as a coffee can pick you up when you're feeling tired. However, neither constantly stimulating a chakra nor weakening a chakra is a good idea in the long-term. And if your 6th chakra isn't particularly weak to start off with you won't feel much of anything at all from the Q-link. At first. The problem with techniques that "rob Peter to pay Paul" - and the Q-Link is only one of many in this respect - is that there is always a price to pay sooner or later. But if, after the initial buzz, the "price" (e.g. insomnia) starts occurring much later, most Q-Link users can no longer make the connection between their new symptoms and something that made them feel better, say, a few months or even a couple of years earlier. This kind of stress (on the 6th chakra) takes time to build up so its symptomatic consequences take time to emerge.
Whose woo woo to believe q links or some random reviewer? This is from a comment on a youtube video I posted a few days ago.