[Bubba Ho-Tep]

Rights cannot be given up as part of a contract. Where did you get that idea?

Sure they can. Military personnel give up all sorts of rights when they sign their contract of enlistment. Non-disclosure, non-compete clauses are common in contracts. The list goes on. As long as the contract is voluntary, there's nothing wrong with it.

[Misterioso]

Name a right you give up by enlisting, keeping in mind what the definition of a right is.