![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjqvpa2E6HXb1c3o4ix9ObaW5WAp7Wsf381BiDJ9FUurSVPLkRU0DxBK-viHRkXy_G-TFaS2qYG_ev7DLkoyny10DlveHUHtxpoI1HLtef9LQTKZn4sPtIBYyzsZbxxvRoJf-okiWjibY09/s400/4ray.jpg)
In the first video David teaches an exercise that works your hamstrings, your butt, and your back:
In the second video David teaches an exercise that works your legs, your back, and your arms:
You find David Rich's Underwear here:
www.RichUnderwear.com
www.UnderwearDVD.com