I think I'm in better shape now than I was 10 years ago, but it takes a bigger toll - I get back pain!
They also explained how the sensors can monitor the levels of acetone on people's breath, and this can be used to tell people who suffer from diabetes when their next insulin shot is due. This is a more discreet method than what is currently on the market.
They have to exist or not in their own right. I mean, with kids, you don't say, 'Which is your favourite,' or 'Which did you enjoy bringing up the best?'

