"conzentrated", an important topic at Koelbel:

The optimal training speed is 30 BPM

... training speed, training tip, intensive, powerfull, conzentrated, 30 BPM, 2 seconds, movement, muscle, fast, slow, like in slow ...

Seite - cliff.koelbel - 02/04/2015 - 13:17 - 0 comments