Isometrische Übungen Plank

Isometrical exercises: Maximal strength in a minimum of time

Just think about a normal Saturday and eight hours of time just for yourself – how will you spend them? Will you go shopping, read a bit and do a small workout? Well, there are people who prefer writing history on a Saturday. They write their own history, and they write it in the guinness book of records, to be exact. It was…