if you have a weak lower back, and want to develop a bigger upper back, do these exercises1-stand in front of a lat pulldown, grab the bar as wide as you can, and with your arms straight, pull the bar down to your waist. this totally fries your lats, its like a pullover, but your standing. 2-same position, stand in front of the lat-pulldown, grab the bar wide, and pull the bar back to your shoulders, it is important to these with very good from, and very light weight, as these will really fry your back if done right.
