iON explains that you can use clues from the pineal gland, the thyroid and the hypothalamus to know when a portal is nearby.
If a portal is nearby, the pineal gland will be agitated and send adrenaline throughout the body. The thyroid determines if the agitation is due to the presence of a portal. If so, then the thyroid signals the hypothalamus which gives a sensation of hot or cold indicating how close the portal is to the body.
If a portal is nearby, the pineal gland will be agitated and send adrenaline throughout the body. The thyroid determines if the agitation is due to the presence of a portal. If so, then the thyroid signals the hypothalamus which gives a sensation of hot or cold indicating how close the portal is to the body.
