Tie a strong rope to your belt and give the loose end to a friend. Start to walk and have him pull the rope (or just stop walking with you) from time to time and give you time to adapt without stopping your movement. Next do the same thing with your eyes closes and than do the same while walking low and than squatting. Next do the same drill as you stand and make large circles with your hips and than on one leg. Do the same with your eyes closed and than tie the rope lower to the knee or the ankle. Note to yourself where on the body it takes more pull to unbalance you and where do you balance more swiftly. Is it high is it low ? Does it change ? Consider this.