It was very difficult to do. I still practice this, only while walking down hallways or alleys where the worst possible outcome is stubbing a toe (or maybe bang

It was very difficult to do. I still practice this, only while walking down hallways or alleys where the worst possible outcome is stubbing a toe (or maybe banging my head on something). Interestingly it doesn't seem to matter much: 20 seconds is seemingly my limit walking or motorcycling (although I don't know what my walking limit would have been back then).