Lat Pull Downs are an excellent exercise for building up the size of your back. They can be used in conjunction with a rowing movement to really push the back to grow faster. While some people recommend using these to improve their chin ups, I would disagree at their effectiveness in that task.
The lat pull downs are what cause that classic V-shape in your back. However, most people execute the movement incorrectly. There are many things people do wrong when using this exercise. Some examples of issues:
- The use of momentum
- Going far too heavy
- Not squeezing at the bottom of the movement
I hope you've enjoyed this description of a lat pull down and how to properly execute that movement.