Jürgen Klopp and the importance of energy

Jürgen Klopp is a football manager. That means there is a limit to how much he can teach corporate bosses about how to do their jobs. Managers in firms tend not to be parent substitutes to their charges, envelop people in bear hugs after a successful meeting or use the gegenpressing technique against rivals. But Mr Klopp has drawn back the veil on a crucial ingredient of success in almost every walk of life: energy.