I'm thinking about Kegel Balls....

Hey there! I'm 23 and I'm trying to improve my physical and sexual health. I don't have any problem with sex right now, but of course I'm always looking for fun new ways to improve-- you can never have "too great" sex! I've started doing Kegel exercises by contracting my muscles in sets of 10, but I'm curious about Kegel balls. I know most of the time they are used to strengthen muscles after child birth. Am I too young to try them? I wouldn't think there would be any harm in using them, but since I am still pretty young and have only had 2 partners in my life I don't want to risk anything to be damaged in the future. Can someone give me any advice should I maybe start slow with one small one and see how it goes?