I have been stretching for two years now with your metal weights. When you say you should take them off periodically, how long is that? One day, one week? I have worn them several days and sometimes weeks without taking them off. [Weight]: I am wearing 21/2 lbs on a constant basis working my way up to 3lbs.Is this too much weight? I measure 5 inches from the top of my scrotum to the bottom. What would be a good regiment to follow as far as how long to wear them and how long to take them off? Thanks for any advice.