--- title: Nails, sweat and smells: smelly feet, armpits and bad breath — a lesson of Mova's school · trees and pragmatics description: «Nails, sweat and smells: smelly feet, armpits and bad breath», a lesson of the biology course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Nails are plates of keratin, the same tough stuff as hair, growing out from a root under the skin to guard yo --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/) / Nails, sweat and smells: smelly feet,… # Nails, sweat and smells: smelly feet, armpits and bad breath Lesson 356 of the biology course of Mova's primary school: 17 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/0/) — Nails are plates of keratin, the same tough stuff as hair, growing out from a root under the skin to guard your fingertips and help you pick up small things. - [1](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/1/) — Most body smells are not made by you at all but by bacteria. - [2](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/2/) — Fresh sweat hardly smells; it is the tiny bacteria that eat it that make the pong. - [3](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/3/) — Pull off a pair of trainers after football and the cheesy smell is a real cousin of cheese: some of the same bacteria help ripen smelly cheeses. - [4](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/4/) — The cure for most smells is the same: wash the bacteria off, dry the skin, air the shoes, brush teeth and tongue, and drink water. - [5](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/5/) — Fingernails grow about three millimetres a month and toenails more slowly; a whole fingernail takes about six months to grow out and a toenail a year or more. - [6](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/6/) — Nails often grow a little faster in summer and on the hand you use most. - [7](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/7/) — The white half-moon at the base of a nail, the lunula, is part of the nail root and is often biggest on the thumbs. - [8](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/8/) — People have twenty nails, ten on the fingers and ten on the toes; biting nails carries germs from the hands to the mouth. - [9](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/9/) — A pair of feet has about 250,000 sweat glands; bacteria eat the sweat and make cheesy smells, and warm, dark shoes help them grow. - [10](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/10/) — Around puberty special sweat glands in the armpits switch on; their sweat is not smelly until bacteria eat it, which is why a wash helps and why older children use deodorant. - [11](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/11/) — Some people, more often in East Asia, have a family trait, passed down from their parents, that gives very little armpit smell and dry, flaky earwax. - [13](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/13/) — Garlic substances pass into the blood and come out through the lungs and even the sweat, so brushing teeth cannot fully stop garlic breath. - [14](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/14/) — Most fart gas has no smell; tiny amounts of sulphur gases make the smell, and gut bacteria make extra gas from food we cannot digest, like beans. - [15](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/15/) — People fart roughly 10 to 20 times a day, which is normal. - [16](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/16/) — Dogs can smell sweat and skin smells we cannot notice, each person has their own smell, and trained dogs have been reported in research to sniff out some illnesses. - [17](https://md.mova.elamur.ai/free/en/corpora/school/biology/356-nails-sweat-and-smells-smelly-feet-armpits-and-bad-breath/17/) — Cutting toenails straight across helps stop ingrown toenails, where the edge grows into the skin and can get sore and infected. - ← previous: [Hair: growing, curly and straight, eyebrows, eyelashes and going grey](https://md.mova.elamur.ai/free/en/corpora/school/biology/355-hair-growing-curly-and-straight-eyebrows-eyelashes-and-going-grey/) - next →: [Bones by name: the skull, jaw, spine and ribs](https://md.mova.elamur.ai/free/en/corpora/school/biology/357-bones-by-name-the-skull-jaw-spine-and-ribs/) - ↑ back to [Biology](https://md.mova.elamur.ai/free/en/corpora/school/biology/)