Once during my NS days I boarded a train at Jurong East MRT. I
cannot find a seat so I leaned against the panel near the train
doors, lock both my knees, and fell asleep... and woke up at Pasir
Ris station.
When I tried to exit the train I find that I hardly walk. I have to
sit on the floor and slowly inch myself out of the train, dragging
my fullpack behind me. I have to sit on the platform for a full 5
minutes before circulation returns and I can trust my legs to walk
again. 
