It's right the opposite bro, at least IMO.
Broz used to have that small column on overtraining on his website, not anymore. There he cited neurochemist, very interesting read by the way. The only thing that can stop you from lifting daily, three times per day is your muscles and tendons. CNS won't burn out just as it does not burn out for ping pong players, starcraft players, quake3 gamers and such 
These activities also require neurological adaptation and as we know the only way to achieve that is putting a lot of stress on it.
That being said, after very heavy set of 1 rep max sometimes you WILL feel burn out even though your muscles are not even a little bit sore. But if you continue to do that daily, every day you will eventually adapt. The only thing what remains constant is the time of recovery of your muscles and tendons. I have spoken to olympic lifter and he claimed that actually lifting daily is better than lifting 3-4x per week because if you lift daily, you (your muscles) will be so fatigued and sore that you won't be actually able to perform at your usual level THUS your tendonds and CNS won't get stressed as much. 3x per week or even less frequent workouts tempt you to perform at your maximal possible level so either you limit yourself or you WILL get injured.
This is also why people say "wow, it's impossible to train for 1-3 reps 7 times per week, I've tried maxing out every week and I failed". What they don't realise is that maxing out every day is SAFER than maxing out every week and allows you to adapt.
I never tried that myself but most top athletes in olympic weightlifting train this way so there MUST be something to it There are some limitations to this, for example lower back recovers poorly so you will have to squat olympic style and avoid deadlifts. High reps are not recommended I wish back then when I was younger and had more time I knew about this, I would certainly give it a try.
hey bro great post thanks for that lots of solid info in there.
in my post I was speaking to what prevents me from training each muscle group more often and more often than not it's sore tendons not the muscle group itself.
for example I went to do arms 3 nights ago. my tris and bis were feeling tight so that's always a good indicator to me they are good to go- tight by meaning I can make then cramp easily in a second or two just by flexing them.
so off to the gym I go, ready for a killer arm workout. I start w bbell curls for bis and goddamn it if that tendon isn't so sore it's all I can think abt thru the entire range of motion. so naturally where the mind is, the stress follows, and because in thinking abt how sore those tendons are all I can feel is them burning further.
no matter what I did after this ie dbell curl etc it was that tendon I felt. I did one more set pack it in disgustedly and went home. no sense spinning my wheels.
I'm sure you know what I mean. you'll notice it happen w all your other groups too. I'm talking for guys who train w weights for your sole purpose of hypertrophy in my case tho not Olympic athletes or power lifters.
I'm the years I've been doing this there has always been a way to train around a still mildly, not entirely recovered muscle group (not painful to the touch sore, sore where you feel it a bit as you warm up). a different angle. a different exercise etc. but sore tendons forget about it. not happening.
so in my experience it's the tendons that need time to get used to workload over the cell itself. I think the cell repairs at a much fasted rate than tendon. that's when tendon surgery is such a bitch to rehab.
again all in the scope of my own experience and what objectives I am hoping to achieve from my sessions.
awesome love this kind of discussion lots of good info and shared knowledge. it betters everyone when you get into things like this. even people not participating in these types of threads just casually reading will take something away from it.
as for the CNS comment in my experience when I'm hitting everything 3x every 6 days for weeks on end, I find my muscles and tendons will get to the point where they can adapt to the workload but the CNS burning out is a very real, very prohibitive consequence. it normally takes me literally months of training like this kind of volume w one day off here and there to hit that wall but when I do there's now amount of good or drugs that will bridge that the body will need rest and not just one or two days.
