Close your eyes and let your partner come at you and touch or hold or strike you in various places. As you become aware of it. Tense up your body and breathe. Do this many times and every time lessen the tension bit by bit or tense only parts of you and this will aid in getting over the fear tension from being touched or surprised while you can still use it for your own good. Next have a person come and grab you in some way as you close your eyes and for example if you are held by one hand reach with your free hand to his throat or anywhere else according to what you feel by the grab. Follow this through and find how you can know where his body is and where is he going according to the touch and don’t expect to get to 100%, we are human. Follow this by moving and being grabbed and continuing your movement  both with the held part (s) and the free parts to get away all while your eyes are closed. It will greatly help you in keeping your wits in a hard situation and in developing your body awareness other than sight.