One day, I was bored at 24 Hour Fitness and went over to the treadmill section. I got on one and turned it on. I started slowly to make sure it wasn't going too fast to knock me over and then roll me off the back.
I became hooked with my new toy. Slowly, 1 mile became 2 miles. Later, 2 miles became 3 mles. Later, 3 miles became 4 miles and so on.