Generally as a late riser if I organise and have my exercise gear ready to go (clothes, shoes, towel & ipod) the night before and lay it out at the end of my bed or prepack it into my backpack I'm much more likely to head out to the planned exercise activity the next day. Doing it with a friend adds an extra kick since your friend will then be relying on you & you couldn't possibly let them down. Lastly swapping it up every second day is good - there are heaps of dance class vouchers all over the internet at the moment (Scoopon/Zoupon/Ouffer). Take some salsa classes like me it could cost you less than $2 a lesson and be tonnes of fun!