Vivametrica isn't the only company vying for control of the fitness data space. There is considerable power in becoming the default standard-setter for health metrics. Any company that becomes the go-to data analysis group for brands like Fitbit and Jawbone stands to make a lot of money.

I was never very interested in boys - and there were plenty of them - vying with one another to see how many famous women they would get into the hay.

I was never very interested in boys - and there were plenty of them - vying with one another to see how many famous women they would get into the hay.