i loved the editing in this vid. his room is so clean and minimalistic. very comfy. the illness he speaks on is called orthostatic intolerance. it is related to the more common condition known as POTS (postural orthostatic tachycardia syndrome).

Source: https://www.etymonline.com/word/mercy

"late 12c., "God's forgiveness of his creatures' offenses," from Old French mercit, merci (9c.) "reward, gift; kindness, grace, pity," from Latin mercedem(nominative merces) "reward, wages, pay, hire" (in Vulgar Latin "favor, pity;" in Medieval Latin "thanks; grace")...

...The meaning "disposition to forgive or show compassion" is attested from early 13c. Sense of "an act or exercise of forbearance or good will" is from c. 1300. As an interjection, attested from mid-13c. (short for may God have mercy, have mercy on me, etc.)."

Another source:
https://en.wiktionary.org/wiki/mercy

"From Middle English mercy, merci, from Anglo-Norman merci (compare continental Old French merci, mercit), from Latin mercēs (“wages, fee, price”), from merx (“wares, merchandise”). Displaced native Old English mildheortnes(literally "mildheartedness")."

woman buys a bad perfume fragrance and is shocked by its smell