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And I think another thing that needs to be emphasized is to never twist when the back is loaded. The discs themselves are pretty sturdy when loaded "liniarly" but they are not built to sustain twisting under load. So don't do twisted crunches or twisting (even your head to see if you put the bar correctly onto the pins etc) under a loaded back.

At least this is what I know about the spine and the discs.

I'm afraid of doing loaded calf raises. One - that my legs would slipp and a mess would happen and two - I've always had back problems after doing them. So I do them on one leg and use dumbbells/plates in that leg's corresponding hand. Going for 15-20 reps.

Damn, you're kicking my ass on these half squats , no wonder you're jumping higher off two feet.

I used 220 lbs yesterday to keep it really explosive.

<a href="http://www.youtube.com/watch?v=6CKHOMKqxYw" target="_blank">http://www.youtube.com/watch?v=6CKHOMKqxYw</a>

Damn, you rest that much even between warmup sets?

 

He did a handful of bad shit there... from landing too deep, staying too much on the ground to not having his arms to his back before landing (which in turn made him lose a ton of time on the ground).

Whatever.

He was half squatting some time ago, not sure how that ended up...

WTF?

So you guys were actually talking about doing jump squats with 80% of your 1RM?

I think this emoticon " " is not enough to express my feelings.