1/2. Sweet spots are everywhere. It's that unique place on a bat where you can hit the ball without jarring yourself, but it's also the perfect tuning point of a musical instrument, and the point of balance in a circus act.
Sport. Physicist Len Fisher is joined by tennis coach
Peter Blendell , England rugby coach Dave Aldred and scientist Jeff Odell to find the sweet spots in sports.
Producer Amanda Hargreaves