My last pregnancy I started about 2 wks before due date, and he ended up being 2 wks over!!!
SO at least I got a lot done!!
I do get the urge to do a lot of strenuous activity though right before the day.
With my first I went on a seriously long walk and just kept going and going, I couldn't stop!
I went into labor that night and had her a day later.
With my last I walked up and down the stairs for an hour straight. Then went on a really long walk.
I went into labor the next day, but was totally exhausted