Finally, we have the inside forearm block. This block is effective, though you have to be quick and delivers a heavy blow at the same time.

Practice this drill:

Pad Holder: Using your rear arm, swing the pad towards the blocker in a hook motion.
Blocker: With your front arm(opposite of the pad holders rear arm), turn your arm so your outside forearm comes in contact with the pad and strike the pad with that block.
Practice this drill to failure.
Practice these blocks as many times as you can. They help build foundations for future blocking and help you become quicker. If you have to think about it, it’s too late.