Any good publisher is always aware of what their readers are doing.
"Roger Anthony Black" Order of the British Empire/MBE is a retired United Kingdom/British Athletics (sport)/athlete. During his athletics career, he won individual silver medals in the 400 metres sprint at both the Olympic Games and IAAF World Championships in Athletics/World Championships, two individual gold medals at the European Championships in Athletics/European Championships, and 4x400 metres relay gold medals at both the World and European Championships. Since retiring from athletics, he has worked as a television presenter and motivational speaker. In 2008, Black joined forces with fellow athlete Steve Backley and operate BackleyBlack LLP delivering Olympic Performance in the Workplace. Black has a collection of fifteen medals from major senior athletics competitions to add to his two European junior championship gold medals.More Roger Black on Wikipedia.
We're not going to go into mom and dad's kitchen, but we certainly shouldn't be having coaches promoting this stuff.