How much can an iPhone 5 take withstand?

My iphone doesn't have a case and I freak out when something hits it or even gives it a little bump because I don't have insurance and I really like this phone and don't want it to break. How much can an iPhone 5 take withstand? And if it were to break, how do I replace it without paying full price for a new one or having insurance?

Your iphone will withstand about 5. That is what the 5 is 4.
If it gets broken just glue it back together.