Final answer:
An 8-month-old infant usually gets around 14-15 hours of sleep per day. Sleep time includes night sleep and daytime naps and it is critical for their rapid physical and mental development.
Step-by-step explanation:
On average, an 8-month-old infant typically gets about 14-15 hours of sleep over a 24-hour period, including naps. Sleep patterns can vary; however, healthy infants in this age bracket usually need several hours of daytime napping in addition to the nighttime sleep.During infancy, there is a significant amount of development. In the first year of life, infants transition from spending most of their time sleeping to an equal split between awake and asleep hours by their first birthday.
At the start of life, sleep is critical for growth and development. Infants might sleep up to 16 hours a day, but as they grow, total sleep time decreases. By 8 months, infants have already passed the period of most rapid growth, but sleep remains essential for their mental and physical development. As infants approach their first year, they are also learning new skills such as sitting, babbling, and even starting to crawl, all milestones that require adequate rest.