Here are some factors that influence body hair:
* Genetics: Hair growth patterns are largely determined by your genes.
* Sex: Men typically have more body hair than women. This is due to higher levels of testosterone, a hormone that promotes hair growth.
* Ethnicity: Certain ethnicities tend to have more or less body hair than others.
* Age: Body hair patterns change with age. People tend to have more body hair in their 20s and 30s, and then hair growth slows down as they get older.
* Hormonal imbalances: Conditions like polycystic ovary syndrome (PCOS) can lead to excessive hair growth in women.
* Medications: Some medications can cause hair loss or increased hair growth.
So, while there are hair follicles all over the body, it's not accurate to say that everyone has hair all over. The presence and amount of visible hair varies widely.