Comment by snarf21

It isn't a horrible idea in the abstract but it seems likely sex would trigger data similar to most workouts. Also, there are people who eat healthy but don't have time for the gym. Conversely people who go to the gym everyday but mostly to try to burn up their Big Mac combo meal. From an insurance standpoint, I think HA1C is the only measure we could like use. Things like BMI, etc. are too varied based on genetics.