Also, if you have high cholesterol, dont wear the ankle weights because i think is too much rush of blood through your arteries very fast, that it could nock down cholesterol in your arteries, big chunks causing them to travel to even smaller arteries eventually reaching to a very small artery and getting clog causing you a stroke...if you are older, dont use it or you already know what´s imminent...
I used it for 20 minutes and had this terrible headache....