Everyone is different.
Our bodies can look very different – large, small, straight, curved and everything in between. Different coloured eyes, hair and skin. Different foods stimulate different responses in different people.
One idea that I’ve heard is that there are two ways to learn things: education and experience (or book learning and doing).
Education is great because it builds your knowledge base from which you can act and change. But there comes a point when more education doesn’t make much of a difference – you won’t become great at driving just by reading road rules and your car’s manual.