Becoming accountable

Lately I have been slacking off when it comes to exercise. It's getting cold out. It has been rainy. Blah, blah, blah. Any excuse. I really need to get up off my lazy butt and get in some more exercise EVERY DAY. Not just a few times a week. I think I need to make myself accountable to not just myself, but someone else. Someone who will yell at me if I don't exercise. Someone who will harass me, and ask me how much exercise I did that day. Hmmm... who should it be?