So you're advocating: . gym memberships . fitness products . supplements . etc? Because all those could fit into your gamification argument. How well in ge

So you're advocating: . gym memberships . fitness products . supplements . etc? Because all those could fit into your gamification argument. How well in general do those work? My points are: 1 Again congrats to that person on the wt loss. 2 Likely it was their focus on changing their behaviour that was responsibile and not the watch. Probably a journal would suffice. Also your statement "...the watch as the critical factor" is surprising, emphasis mine. I think only if I knew that person really well and had witnessed the transformation personally could I make that statement.