Dumbbells are an excellent way to strength train the entire body. Upper body, lower body, even the core can be trained using a set of dumbbells. Dumbbells are available in hexagonal, vinyl coated, or steel. 

 

 

In this video clip you will see how to perform a Lat Pull using one arm. This exercise targets the lats - a large muscle which runs down the sides of your back and assists with pulling movements. For more great tips on strength training, try a book on muscle conditioning by Paul Chek.