Originally Posted by Silock
What's the point of light weight 12 rep sets? You said more weight means injury, which isn't true at all.
I thought it fit better since his focus is cardio.
If he's a n00b and puts on too much weight, his form is likely to fail leading to injury, particularly with squat. That's been my experience with n00bs anyway.
If he gets his form solid and gets his supporting muscles stronger, then he could move the weight up, but if he's a n00b, I wouldn't suggest heavy 3 or 5 rep sets.