Final answer:
Insulin, melatonin, dopamine, and adrenaline are drugs that can affect brain activity and are commonly misused. Misuse of these substances can lead to serious health issues and disruptions in sleep patterns.
Step-by-step explanation:
Drugs that affect the brain by increasing activity are the most commonly misused ones.
Insulin, melatonin, dopamine, and adrenaline are all substances that can affect brain activity.
Insulin is a hormone that helps regulate blood sugar levels, but when misused or abused, it can lead to serious health issues.
Melatonin is a hormone that helps regulate sleep patterns, and misuse of melatonin supplements can disrupt the body's natural sleep-wake cycle.
Dopamine is a neurotransmitter associated with pleasure and reward. Drugs that increase dopamine levels, such as cocaine or methamphetamine, can be highly addictive.
Adrenaline, also known as epinephrine, is a hormone that increases heart rate and blood flow. Stimulants like caffeine and amphetamines mimic the effects of adrenaline.
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