Okay, when the first thing that we need to understand is that the things we experience are fundamentally chemical reactions that occur in our brain. So our bodies receive stimulus from external sources, whether it be through the sense of touch our vision, or hearing, our smell, or taste. All of these are external, external senses. And these are then relayed through our nervous system and our brain interprets of signals, firing different chemicals. And then we also create an emotional response. It's related to the chemical signatures that are present in our body.
Now, this all happens in a millisecond. So you may have an experience where you feel happiness. That's an emotion that's a chemical response. And it can happen instantly. You may have an emotional response to something that happens like someone jumps out and startled you. So that's going to be a different chemical reaction that occurs in your brain again, it happens almost instantaneously.
Now the thing to keep in mind is that because these are chemical reactions, the immediate response to a stimulus has a half life. It has a shelf life, let's say, that's a little easier for a lot of people to grasp and then half life. So the shelf life, the expiration date of a chemical signature, in most cases is only a matter of minutes. And so they see that a lot of the stress related hormones that the half life or the the shelf life is about 90 seconds. So if you're driving your car and someone cuts you off, and you have to slam on your brakes, your brain is going to release certain chemicals, your adrenaline is going to get pumping, and your heart rates gonna go up, you go into fight or flight mode, so your sympathetic nervous system is actually debated. And that's to help you to better deal with that situation.
And once the situation is gone, the chemicals start to fade your system, they start to wear off, and your body is designed actually to go back to homeostasis. So, if you think about animals in the wild, if a bunny rabbit is out in your garden eating something, and your dog comes running out and chases the rabbit away, as soon as the the rabbit senses the dog, it's going to go into its fight or flight scenario, that camera is going to fire it's going to shoot off it's going to run away. And it's going to stop when it senses is out of danger. And it may take a second or two to make sure the surroundings are safe, and then it immediately goes back into its natural state. Now humans we've developed over the centuries, we have those same basic reactions, the problem is because of our conscious mind.
We've learned to hold on to things, it's our ability to forecast in the future and to also to remember the past and relive the past that sometimes gets us stuck in emotional states, particularly those that relate to stress. Those relate to our sympathetic nervous system. So we, if we go back to that scenario of you're driving your car, you have an incident that makes your adrenaline fire. So your stress hormones go off. If everything was as it's supposed to be, after about 90 seconds, your heart rate would return to normal, the chemicals would start to fade out of your system, and you just be back into your regular normal self, but we tend to hold on to these things. So even after the danger has passed, we keep reliving it.
And the thing is, is that when we relive it through our memories, particularly the subconscious mind doesn't know the difference between What is real and happening at this moment? And what is a memory or what is imagined. So the memory would be the past, the imagination would be the future. So our subconscious mind really can't distinguish between the past, the present, and the future, they all exist as one. This is what in quantum physics they call super positioning. So all three potentials, all three realities occur or are in existence at the same point.
So the problem that we have is that if we hold on, or we project into the future, those hormones are still going to be signal. So while the threat has disappeared, the memory of the threat and the feeling like it may happen again, keeps releasing those hormones keeps releasing those same chemical signatures in our brain, which are going to make us feel the same thing. So instead of being able to relate Like the bunny after the dog is gone, and go back to just a chill life, we find yourself in this constant cycle of stress. So it's important understand how this happens and why this happens, because this is going to give you the keys to unlock the benefits of just taking 90 seconds. Okay, so let's move on to this next phase.