Originally Posted by
docbert
Depending on where you're headed in T3, getting off at Intl A and walking can also be a good option. Even if it's not quicker it gets some steps in for the day

I do this almost every time I fly out of T3. Not only for the steps, but also that I just really want to get off the slow train by that point. I think the only time I stay on is if I'm flying out of T2, since even getting to T1 is quicker exiting the Intl A station.