Wikipedia
Shovelgloving is a form of physical exercise based around use of a sledgehammer that has been wrapped in a sweater or otherwise padded. The shovelglove is used to perform shoveling, butter churning and wood chopping motions, amongst others. These natural movements are intended to be part of a functional training program.
Reinhard Engels, the inventor of Shovelgloving, advocates Shovelgloving for 14 minutes per day.
He explains the rationale for 14 minutes as follows: "It's one minute less than the smallest unit of schedulistically significant time. No calendar has a finer granularity than 15 minutes. No one ever has a meeting that starts at 5 or 10 or 14 minutes before or after the hour. You have no excuse not to do this. Time-wise, it doesn't even register."
He recommends beginners start with less than 14 minutes, however.