While I respect people’s rights to worship

I don’t know how people can go for like 12-15 hours without eating or drinking. To me fasting even for religious purposes in my eyes is a bit extreme. I get it’s to build spiritual fortitude and to understand the less fortunate etc. I don’t know how individuals can function properly without regular sustenance and water and go to work, school, etc. without getting dizzy weak or fainting. I also don’t understand restricting types of food you can eat during for example lent like you must have no meat on Fridays. People can do what they like but I just don’t see the point for me personally. Anyway that’s just what I think.