Something I'm thinking about trying

I read a few blogs. Some are funny, some are...slightly inappropriate (and hence not linked), some are Jesus-esque, some are friends, and some are total strangers who I find to be dynamic wordsmiths. One of the blogs I read is written by a very funny, very honest young mom and she tries to establish one good habit at a time. For the month of July, she will be getting up at 6am everyday.
I'm doing a 21-day eating breakfast stint to try to win loot from Jamba Juice, and that's not hard because 1) I love to eat and 2) I love breakfast food. So I've been thinking about what good habit I should try to establish that would be harder for me to achieve. Here's what I'm thinking:

1) Read my Bible everyday. (A collective gasp goes up in the internet). I know - shouldn't I be doing this already? Don't judge.
OR
2) Spend 30mn to an hour everyday cleaning. I hate cleaning. But a dirty house means no-one can ever come over.
OR
3) Exercise everyday. Blech. I know in the long run that it would be very beneficial for me to have healthy exercise habits. But...sweating!! And shortness of breath!! And the aches and pains! Oh my!

What do you think? The Bible? Cleaning? Exercise? They'd all be hard for me to do and you'd have to help keep me accountable. But they'd be worth it.

Throw your two cents in.