Happy New Year! I've been using your DVDs and they're great -but I'm wondering when I soluhd increase my weights. Right now I'm using 10lbs,15lbs, 20lbs and 25lbs. My goal is to get stronger, but when do I know it's time to increase. Also, I am afraid of injuring myself if the weights are too heavy. Holly, is there a formula that I soluhd used on what is the right weights one soluhd use. Help! I want to get strong and feel like I'm getting something out of my workouts without hurting myself. Thanks for everything. You keep it up now, <a href="http://dkhvoto.com">untdsrdane?</a> Really good to know.