what are cortisol,adrenalin, orexin:
Cortisol: Cortisol is a steroid hormone produced by the adrenal glands, which are located at the top of your kidneys. It is often referred to as the "stress hormone" because its levels increase when your body is under physical or psychological stress. However, cortisol serves many other important functions beyond stress response. For instance, it helps regulate your body's metabolism, reduce inflammation, and assist with memory formulation. It also has a vital role in the body's sleep-wake cycle.
Adrenaline (also known as epinephrine): Adrenaline is a hormone produced in the adrenal glands and some neurons in the brain. It plays a crucial role in the body's fight-or-flight response. When you perceive a threatening or exciting situation, your body releases adrenaline into your bloodstream, which causes your heart rate to increase, your pupils to dilate, and your airway to open up. This prepares your body to react quickly to the situation, whether that means running away or facing it head-on.
Orexin (also known as hypocretin): Orexin is a neuropeptide that regulates arousal, wakefulness, and appetite. It's produced in the hypothalamus, an area of your brain that's involved in many functions, including sleep and hunger. People who have narcolepsy, a condition characterized by excessive daytime sleepiness and sudden attacks of sleep, often have a deficiency in orexin. This is because the neurons that produce orexin in their brains have been damaged or destroyed.