Im to young to be old.

Today I babysat two young kids for about 3 hours, ages 3 and 9. Very soon after I arrived, the 3 year old went down for a nap. This should be easy right? All I had to do was play with the 9 year old for a little bit then when the 3 year old woke up there would only be 45 minutes left till the mom got home. I played every board game known to man kind with this girl. Everything from Life, to monopoly, to her own made up games. When the 3 year old woke up, things got crazy. I knew little kids could be hyper, but not THIS hyper. He decided we were going to play this game called "Tickle Monster." Sounded easy enough. But as we started running around tickling each other I began to feel the fatigue setting in. My legs began to become weak, making it hard to even stand. Of course they didn't know this was happening to me, so they continued to tackled me and try to pin me down. This is easy stuff for normal teens to handle, but for me I was struggling. I finally got them to calm down and play with their Lego's. I tried to keep a smile on my face till their mom got back. When I got home, I sat down and realized, this should not be happening to me. I'm supposed to be a healthy 14 year old girl. I should be able to be that fun babysitter that runs around and plays their silly games, not the one who has to stop them. I feel like I could have been their grandma. I am her substitute as babysitter since she moved anyway. Its these small things that bring me down. It makes me sad.