Physiological Wall
In marathon running a runner can 'hit' 'the wall'. A point where the human brain and body feels like it cannot be pushed further or continue. Runners find this incredibly hard to break through and continue.
A wall can also refer to something that the human mind is blocking or hiding from memory but this is debatable.
Read more about this topic: Wall
Famous quotes containing the word wall:
“Most of the time she had the personality of the back wall of a handball court.”
—Alexander Theroux (b. 1940)