Key Turbo Trainer Drill... (I see what you did there)

Next time you are on the Turbo Trainer try this drill.

• Place a set of keys on the handle bars or frame so that they hang free. Pedal at a comfortable cadence around 80-100rpm. 
• Slowly raise your cadence higher and higher, until you hear the keys start to rattle or jingle. Then drop the cadence to a point just before they started to rattle, so they are not jingling any more.
• Hold this cadence for 3min, then settle back to your initial cadence. 
• Rest and Repeat