I walked a ridiculous distance and was 4 days overdue
I walked over 150 miles in the past 2 months. I'm now 41 weeks.
There's no real way to ensure you don't go overdue. Baby will come when they're ready. Just like there's no real proven 100% effective way to self induce labor.
I walked 2 miles then had sex nd it sent me into labor..but I was very active during my entire pregnancy working 10 hours 4-5 days a week