lol - far out...
Why do u think there are so many back problems? - with everyone...weak core....
If your going to want to squat heavy, bench heavy, deadlift heavy you need to strengthen your core its as simple as that .....
Its more important at a beginner level to get it into ppls minds that you need to be doing direct core work - i.e abs, hamstrings, glutes, lower back.......
Whats being in the gym for 30 mins got to do with anything....
Here is a simple workout that I do myself - takes prob 45 mins - 1 hour:
squats - 3 x 3/5 x 5 - or max
lunges - 5 x 10m
glute ham raise - 5 x 10
rev hyper - 5 x 10 (banded or weighted)
side bend: 5 x 10 (each side)
leg raises: 3 x 20
situps: 1-2 x 100-200
Thats a pretty avg workout....anyone have a problem with that or would disagree with anything?
I would give this workout to a beginner to advanced lifter.