I second Heather's comment regarding the laxative - don't even consider it. Just be careful in what you eat the day before, and don't try anything new that might cause you trouble. I also carried a water bottle with me and took plenty of gel (abou...
I'm a 30-something dad who's hooked on distance running. When I'm not chasing around my two active little munchkins (ages 3 and 5), I run for the pure joy of it.
I have an australian shepherd and he LOVES to run. In fact you have to run them or else they'll find ways to get in trouble when you're not around. I run him in the morning for 4 miles and then my wife will run him in the afternoon. They are great...