Complex sentence: Testing conducted in the 1990s in England revealed that during a delivery virtually all bowlers flex and extend their arms naturally to some degree as it rotates around the shoulder, revealing the strict Laws of Cricket which banned any flexing of the arm were impossible to follow.
Split into simpler sentences: Testing conducted in the 1990s in England revealed that during a delivery virtually all bowlers flex and extend their arms naturally to some degree as it rotates around the shoulder. This testing revealed that the strict Laws of Cricket which banned any flexing of the arm were impossible to follow.