Geoff Colvin in his brilliant book, Talent is Overrated made the argument that mastery of any skill comes only after 10,000 hours of deliberate practice—or in Jiu-Jitsu terms 10,000 hours of mat time.
Geoff Colvin in his brilliant book, Talent is Overrated made the argument that mastery of any skill comes only after 10,000 hours of deliberate practice—or in Jiu-Jitsu terms 10,000 hours of mat time.