There are problems which happen so quickly that you can't do sustained thinking while you're in the middle of them, but sustained thinking might help install good reflexes for the general case.
For example, I fell safely on ice for the first time this past winter. I'm reasonably sure that the Five Tibetans (a sort of cross between yoga and calesthenics) strengthened the muscles around my knees and possibly had other good effects such that I didn't twist my knee.
This is our monthly thread for collecting these little gems and pearls of wisdom, rationality-related quotes you've seen recently, or had stored in your quotesfile for ages, and which might be handy to link to in one of our discussions.