Honda 2009 GOLDWING GL1800 Owner's Manual page 87

Braking
Riding with your foot resting on the brake pedal or your hand on the brake lever
may actuate the brakelight, giving a false indication to other drivers. It may also
overheat the brakes, reducing effectiveness.
(Models not equipped with ABS)
As with a conventional motorcycle braking system, excessively hard application
of the brake controls may cause wheel lock, reducing control of the motorcycle.
Applying the brakes too hard may cause the wheels to lock and slide, reducing
control of your motorcycle. If this happens, release the brake controls, steer
straight ahead until you regain control, then reapply the brakes more gently.
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Basic Operation & Riding