What is the largest organ of the human body?
AnswerThe skin
The skin is the body's largest organ, covering and protecting everything inside.
Health · Facts & stats
Wellness facts & stats
7 fact-checked facts about wellness and the body, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Heart rate is usually measured in which unit?
AnswerBeats per minute
Heart rate counts how many times the heart beats in one minute.
Going deeper
Roughly what share of an adult human's body weight is water?
AnswerAbout 60%
Water makes up roughly 60% of an adult's body weight, varying with age and body composition.
Which brain chemicals are often linked to the "runner's high"?
AnswerEndorphins
Endorphins are natural chemicals released during activity that can reduce pain and lift mood.
Vitamin C is also known by which chemical name?
AnswerAscorbic acid
Vitamin C's chemical name is ascorbic acid, from 'anti-scurvy', the disease its lack causes.
Expert level
Which hormone released by the adrenal glands is often called the stress hormone?
AnswerCortisol
Cortisol is released by the adrenal glands and helps the body respond to stress.
Which part of the nervous system is known for "rest and digest"?
AnswerThe parasympathetic nervous system
The parasympathetic system slows the heart and aids digestion; the sympathetic drives 'fight or flight'.
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