This is also one of the questions that has been lurking in my mind. But fortunately, in Will Brink’s Muscle Building Nutrition Forum, a knowledgeable guy called erp7e, briefly explains what it is. I am directly quoting what he says.
"Most motor activities are initiated from your central nervous system (CNS). To grossly simplify this in context, it does not matter to your CNS (and perhaps as importantly, your endocrine systems), whether you are working pecs or quads or bis. There are resources being depleted at a CNS and endocrine level regardless. Therefore it is important to consider neuroendocrine recovery in program design.
The bottom line is, most mortals cannot train every day just because it is “a different body part.” Your system needs to recover. It is flawed (and common) thinking that your quad muscles themselves are the only thing that need to recover from a quad workout."
In addition, I also found a website containing Ian King’s interview. This is what he say about the importance of CNS Recovery.
“The nerves fire the muscles. When the nerves get low on their fuel, they can’t work. So not only do the muscles need to recover, but so does the nervous system. I haven’t seen a lot of quantification of this system but experts in the world of athletic preparation commonly quote that the CNS takes 5-6 times longer than the muscles to recover. Because the CNS is common to the whole body, lack of recovery of the CNS is one reason why you should not train more than 2 days consecutively (generally speaking, in strength training). Your CNS is unlikely to recover, despite the fact you are training different muscle groups. This concept is totally overlooked by those training a split routine more than 4 times a week. Not even anabolics can ensure adequate recovery of the CNS. Muscles can be willing, but the lead to the spark plug is off!”
Hope these help.
That explains quite a bit. If the CNS takes 5-6 times longer than muscles to recover, and i remember that it should take around 48 hours to let a muscle recover (is this correct or am I misinformed), then shouldn’t we only work out every couple of weeks?!
[quote] Jersey5150 wrote:
Also you dont need to understand the concept or any concept completely and in great depth to reap the benefits. If you know its the facts and you understand how to apply these facts to your training you will do fine. Kinda like you dont need to know how a tranny works to drive stick but a basic understanding might help.
Thats very true. I guess I should follow the programs on here as I am sure the guys have allocated time for CNS recovery.