It's good to take a shower.
John had been working outside in the garden and had dirt all over himself.
John wanted to go to sleep.
John takes a shower and puts on clean clothing before going to bed.
John went to bed in the clean bed without taking a shower.
John wakes up in the morning in a nice, clean smelling bed.
When John woke up in the morning, he had to take the sheets off the bed to wash them.