"Extra sleeps" is a common phrase used to refer to additional hours of rest beyond one's normal sleep schedule. There are several synonyms for this phrase, including "nap", "siesta", "doze", and "rest". A nap typically refers to a short period of sleep during the day, while a siesta is a longer afternoon nap that is common in some cultures. A doze is a brief period of light sleep, often taken while sitting upright. Rest refers to a more general period of relaxation or recovery, which may include sleeping but also encompasses other activities that promote rest and rejuvenation, such as meditation or reading.