The most common question I get is: "Do I have to buy something to improve agility?" If you've been using a particular product for a long time, chances are you can do the same things that you've been doing, and in fact you already can. That is, in general, the case with most products on this page. Here are the products I've found that have been proven to improve agility, as well as some I know have some anecdotal evidence to show they help or work for some, but there is more to it than that. I have listed all the products and their products that are "proprietary" in the "Proprietary Products" column. When you look at the products on this page, you will find a link to the product information for that particular product, and then also to the company website to find out more about their product. The information is provided by that company and it is the responsibility of each individual to use and study it, not the responsibility of the company or anyone else for making their own judgment. Many of these products will have a "free trial" section where you can try the product before you pay. Here is a list of the products I have tested in the past.