Have a friend with a thick rope or a chain stand near you and start to swing it at you. At first just avoid the contact as you keep yourself aligned and relaxed as possible and than add to this flattening the rope or chain on your body and adding a limb (for example folding your forearm over your chest) to keep the chain or rope and to come closer to your partner in this drill. Make sure your eyes and body are relaxed and free to move. Too much focus on one thing makes you tense and blind to others. Pay less importance to keeping the chain than to staying away from harm.