13? and you have to ask. Cleanliness is close to godliness. When I was a kid and my beloved (passed) uncle found out from my mom I didn't wash up, he wash me only once with a scrub brush. With that expereince I learned to use a wash cloth every evening b4 go'in to bed.
Sweetie you need to shower more..... Especially since you're getting older and you probably starting to get a little stinky!!!! I'm judging by your name that your a girl and if you have your period you especially need to shower every day.
I would have a problem if I had someone hanging around me showering that much. I would encourage you to shower daily regardless if you wanted to be like Pigpen from Charlie Brown. As you get older it will become increasingly important you bathe, or shower.
if you dont shower more frequently due to lack of time, just cut 15 minutes out of watching tv or what ever you do in your down time to shower. and if you are a 13 year old girl that's a little concerning cause...well... you know.