How do you measure your cadence? I see lots of cadence-related questions on here where people cite fairly specific cadence rates. How do you calculate your cadence exactly? Do you just set a one-minute timer on your bike computer and count them manually?

From my understanding, cycle computers can calculate this for you. For example, Specialized has accessories for adding cadence sensors to some of their computers. This seems to me to be the simplest way.

There are also plenty of listings for them on Google.