1) Reverse wrist curls with barbell

This exercise hits the extensor muscles of the forearm.
The subject takes hold of a barbell with an overhand grip hands about 10 inches apart. Setting his/her forearms on his/her knees he/she then slowly lets the weight hang down moving the wrists only and trying to keep the forearms as stable as possible.
Letting the barbell roll out of his/her palm to the fingers he/she then lifts it back up again only using the wrist and keeping the two forearms perfectly motionless.