Since December 2013, I've made a simple bet with my very good friend, that we will go to gym 3 times a week, either for a minimum 5 km jog or weights - anyone who doesn't do so will have to pay the "winner" $10.
Since then, I realized that I've been jogging a minimum of 3 times per week, on top of extra weights sessions in between...and I've been steadily increasing the distance jogged from 5 km to 5.5 km, to 6 km, to 7 km.
Perhaps I will increase the distance to 10 km in each session.
I wonder if my desire to not lose is stronger than my desire to win? Hmm. Anyone has any similar experiences?