Comment by ilaksh
10 years ago
I can buy the conclusion except that I believe you can only usually tweak performance in small degrees without actually over-exerting yourself, since the central nervous system _is_ in fact an expert on what you are capable of doing safely.
I think the point is that you can keep increasing performance in small degrees, so it's kind of like training your brain to allow small incremental performance boosts by saying "see, I didn't get injured or die, so give me another 1% speed". Of course, sometimes this does actually result in injury, so if you want to be safe it's probably best not pushing too far.