My razor vibrates?!
Question: whats the point of it?
Answers: whats the point of it?
The biological explanation revolves around the physiology of our hair follicles. Mammals have the ability to raise hairs; this razor depends on that ability. While humans cannot control their hair raising, it can be triggered. Attached to each and every follicle is a bundle of muscle fiber called the arrector pili, which as its name suggests, is responsible for raising hairs. This muscle is smooth muscle and not a skeletal muscle, so its functionality is controlled by the sympathetic nervous system. This means that we can only involuntarily flex this muscle