Quote Originally Posted by Easto
Squat once per week.

Go ass to the ground. Your hamstrings should touch your calves at the bottom. This will put the least amount of stress on your knees, believe it or not.
thats a little extreme.

For boxing I'd advise 3-4 sets of ten repetitions, start at once a week then when you get better go to twice a week.

go down so your thighs are parallel to the ground.

Don't have the bar on your neck, try to move it down your back.

As soon as you can do 4 sets of ten with a weight make it heavier.