Also if you are drinking a lot of water, it's always a good thing to be able to the bathroom quickly.....when I drink a lot of water when I'm sick, the having to go hits so quickly, there's no time to deal with things that are hard to get off.
During the winter, I live in sweat pants & shirts because I have to keep my house so cool. Easy on cloths are a blessing when one has to go to the bathroom quickly.