http://www.LeeHayward.com The forearm extensors are the most neglected muscle group when it comes to grip and forearm training. Most people just focus on the muscles that close the hand, but the forearm extensors (the muscles that open the hand) must be trained as well for maximal development. Just like you wouldn't train your biceps and forget about your triceps, the same idea applies when it comes to your forearms. One of the best forearm extensor exercises for strengthening the grip is Rubber Band Finger Extensions. Just get a thick rubber band and place your fingers and thumb inside the band. Spread your fingers as wide as possible, close them, and repeat. You can also do the same thing with your thumb and each finger individually. This is also an excellent exercise for anyone who suffers from elbow tendonitis and carpal tunnel syndrome because it helps balance out the muscles in the wrists and forearms, which can help relieve the pain and strain on the tendons.