Michael boards the train with an impressive looking woman at his side, Helen Corner.
Michael looks absolutely peaky and sickly. He's slightly hunched over and very pale. He hugs and kisses her goodbye relatively quickly and heads for the train. Michael spends much of his time in the Ravenclaw-dominated section of the train, excusing himself several times from mates and seemingly heading for the loo. If people ask, he says that something last night didn't sit very well with him.
In the last third of the ride, he seems to stabilize some and makes a few trips out of the cabin to observe the firsties like he intended to. He stays pale throughout the trip but is never visibly sick in front of any of his mates.