If you're so unlucky that you should keep standing up on in your subway ride, then I recommend you to lean back on the edge of the door. Then you’ll feel comfortable while you lean against the door and may even you'll be able to fall asleep. But remember you should be on the door that doesn't open at the stop. So double-check in advance if you're at the door that opens at the stop. Then don’t you want to move as fast as possible on in your subway ride? There're doors are close to transits or exits at every stop. I guess you feel annoyed with finding which doors are near the exit while you commute, but in my case, getting off on the closest door to the exit makes me to save about 10 minutes every day. For example, when I go to my office, I get on the in subway and stay in the 4-4 section to transit early in Sindorim station. So I recommend that you to see where the closest door to near the exits or transits is during your subway trip and try to use that the door next time. You’ll be satisfied with this time-saving trip.