Getting Old

Okay so after spinning last night, Ellen, Ken and I went for a beer at this divey bar near Penn Station where we like to go. We haven't all seen each other in a while and we wanted to catch up, so we ended up having three pints each. I came home and sat around and drank this huge bottle of water before going to bed. So, why do I now feel like I was out drinking for half the night? Three light beers would have been like water to me a few years ago -- gah! Seriously getting old.