PSYCHOLOGY OF EMOTIONS

Detailed explanation-1: -Caffeine is a stimulant, which means it increases activity in your brain and nervous system. It also increases the circulation of chemicals such as cortisol and adrenaline in the body. In small doses, caffeine can make you feel refreshed and focused.

Detailed explanation-2: -When we drink coffee, caffeine mimics adenosine and attaches to adenosine receptors in the brain. Caffeine effectively blocks the receptors-in other words, it “antagonizes” the activity of adenosine, making us feel more alert and awake.

Detailed explanation-3: -Prescription stimulants increase the activity of the brain chemicals dopamine and norepinephrine. Prescription stimulants increase alertness, attention, and energy. Their misuse, including overdose, can also lead to psychosis, anger, paranoia, heart, nerve, and stomach problems.

Detailed explanation-4: -Furthermore, according to them, caffeine had only wake-promoting effects while stimulants had “real” cognitive enhancing effects (e.g. on concentration). In addition, participants remarked that some time after intake the desired effects become transmuted into their opposite.

Detailed explanation-5: -Stimulants are a class of drugs that speed up messages travelling between the brain and body. They can make a person feel more awake, alert, confident or energetic. Stimulants include caffeine, nicotine, amphetamines and cocaine.