It can also be agricultural products, books, cars, fitness equipment, etc. , just don't sell some cosmetics and so on. When this generation was young, they basically overspent for their livelihood. Generally speaking, they have physical problems and it is no problem to sell health care products.
No matter what goods you sell, you must understand the market prospects and related policies. And what goods you sell. The best way to really understand your product is to try it yourself.