An economist once dubbed “champion of choice” by The Guardian newspaper would like your employer to organise an exercise hour for you and your colleagues. Professor Julian Le Grand was once a social policy adviser who had the ear of Tony Blair.

Now he has everybody in Britain sitting up (sorry) and taking notice. Even though Prof Le Grand intends to offer an opt-out to anyone who doesn’t much care for the idea of doing a bench-press with the boss as spotter, that doesn’t make the idea appealing.