If everyone had a live countdown of their lifespan like we do (check out the updated catalogue if you don't have one yet and want to purchase one), I'm sure the average fitness of humanity would increase massively.
Just imagine drinking a can of coke and seeing your lifespan countdown suddenly accelerate.
On the plus side, seeing your lifespan increase slightly from each workout session is definitely a huge motivation.
You'll also be able to witness how harmful one night of bad sleep can actually be, directly taking over a week of lifespan (or even way more depending on if it's a regular occurrence).