pedalling frequency, what is the best pedalling frequncy

Pedalling frequency is the number of times you turn your cranks per minute. It is said that the best pedalling frequency is 90, however it depends on individual characteristcs of a cyclist. There are some cyclists like for example Bert Grabsh whose pedalling frequncy is only 50 or less. So you must see what pedalling frequency you feel most comfortable with. Mine is about 70.