Doing the machine leg extensions exercise is a great way of executing a good muscle building program for your legs.  This is an exercise that you would like to start off by using small weights and gradually work your way up with experience.

However, if you want your legs to look proportion with one another, then building strong quads is an essential part of succeeding.  You have to look proportion to look good.  Having strong quads can give you the explosivness you need when playing any sports.

Here you will find a step by step description on how to properly do this exercise:

Extensions Exercise

Description

1. Sit in the knee extension machine station.
2. Place the front of your ankles under the pads.
3. Slowly fully extend your legs.
4. Return to the original position and repeat the process.