Aganor – I had not stretched after a brutal stretch of running and leg days and def. pulled the hamstring (couldn't run for about a week).After learning the hard way of being on the wrong side of 30, I do a light stretch and active movements prior, 5m warmup jog (~9m/mile), more stretching then the actual HIIT. My first round is always like 75% full strength just as another precaution.After follows more stretching, 15m break and then into the weight room.That's kinda why I went the route of maybe not having enough of something in my diet (potassium? - not in my multivitamen and one thing I don't get since I do AM workouts)

To the point of almost not being able to not walk correctly?

I've had DOMS so bad that I would waddle when I walked.  It isn't from a nutrition deficiency, it's from damaging the muscle fibers on the eccentric portion of the lifts.  It's just from training hard.I personally don't get why this is a problem, but if you need to avoid it because you do a sport or manual labor, do concentric only exercises.

To the point of almost not being able to not walk correctly?

I've had DOMS so bad that I would waddle when I walked.  It isn't from a nutrition deficiency, it's from damaging the muscle fibers on the eccentric portion of the lifts.  It's just from training hard.I personally don't get why this is a problem, but if you need to avoid it because you do a sport or manual labor, do concentric only exercises.

There's a term that gets thrown around a lot in the UK after a heavy leg day, "walking like you've been bummed".

I've had DOMS so bad that I would waddle when I walked.  It isn't from a nutrition deficiency, it's from damaging the muscle fibers on the eccentric portion of the lifts.  It's just from training hard. - Waddle...that's intenseI personally don't get why this is a problem, but if you need to avoid it because you do a sport or manual labor, do concentric only exercises. - Yeah, both really.

If you like, you can post your training sessions an I can help you modify it so you won't get as much DOMS.

“Drunken Walk” forums established this a while back XD

Heh, in this diet and in any diet my DOMS are all the same,Must have something to do with one's CNS type and resistance as well as the fiber damage!

The CNS is actually irrelevant.  DOMS is from the amount of damage caused to the muscle.  Heavy eccentric contractions, a lot strain placed on the muscle (a stretch), high volume, and high intensity cause a lot of muscle damage.For example an exercise like a good morning with very heavy weight done to failure will likely cause a large amount of DOMS in the hamstrings.  This is because the hamstrings are given a big stretch and undergoing a very heavy eccentric contraction.  If this is done for a lot of volume the problem is compounded even more.  However, if this is done very frequently the body will adjust and the DOMS will decrease.  This is why frequency is very important when preventing DOMS.  It is also why I am not a fan of "Weekend Warrior" training where the trainee inly trains two or three times a week.Now compare these good mornings to a reverse hyper.  The reverse hyper will actually cause the hamstring to be activated a lot more than a good morning, yet is causes less DOMS.  This is because the reverse hyper does not involve heavy eccentric contractions and the hamstring does not get anything near the stretch it gets in the good morning.The CNS is irrelevant because the CNS coordinates the movement regardless of whether or not heavy concentric contractions or stretching occurs.  The Olympic lifts can destroy your CNS, yet they don't cause DOMS that much.  This is because of the lack of eccentric phases of the lift.

So the heavier the load the more wrecking is to the CNS?For example a 1 rep squat does more damage to the CNS than a 6 rep squat?I mean, i know it does but why?

It's a bit more complex than that.  If you do a heavy single at 90 or 95% of your max, I would say it is less taxing on your CNS than doing your 6 rep max for 6 reps.  I think the real question is what is harder on your CNS:  a one rep max or a six rep max?  I would lean towards the former, but I do not know for sure.You also have to control for the choice of exercise, resistance type (free weights, bands, machine, ect.), and skill level of the trainee.