Cat Company at Night III
Cats are often playful nature and may even observe a sleeping person and interpret shifting during sleep a time to engage and play. Pouncing and playing with feet or hands can be an issue and this behaviour would indicate that an alternative be put into place.
Aside from movement and general sleep degradation, there remains a risk relating to hygiene. A cat will visit the litter on a regular basis and clean itself when necessary but this does not eliminate all debris and faecal matter being transferred to the bed.