Our body constantly generates heat, and the skin dissipates this heat to maintain a stable temperature. But your ears are covered when you wear headphones. As a...
A sheet of paper may appear smooth, but in truth, its edges are a genuine series of microscopic saw teeth. It is this irregular structure, almost invisible...
When exercising, the bronchi naturally widen to allow more air to pass through. This dilation, also known as bronchodilation, occurs thanks to small muscles surrounding...
The majority of disinfectant gels are mainly composed of ethyl alcohol (ethanol) or isopropyl alcohol, usually between 60 and 80%. These alcohols have strong antiseptic...
In winter, several viruses, including those of the flu and the cold, survive longer in cold, dry air, making their spread more efficient. The cool...
Breathing through the mouth during sleep is a common cause of waking up with a dry throat. Normally, when breathing through the nose, the inhaled...
Your ear works a bit like a very sophisticated microphone. Sound enters, travels through the ear canal, and vibrates the eardrum. These vibrations activate small...
Beard growth depends heavily on hormones, particularly a derivative of testosterone called dihydrotestosterone (DHT). The more DHT you have, the more your facial hair is...
Goosebumps are simply a bodily reaction manifested as small bumps on the skin. They appear when the tiny muscles located at the base of each...
Sleep talking corresponds to talking during sleep, consciously or not, and sometimes even holding real little conversations! Generally, these nighttime utterances are rather brief, difficult...
