Final answer:
Adults are generally recommended to get 7-9 hours of sleep per night, though individual needs may vary, and factors like stress can impact sleep quality.
Step-by-step explanation:
Medical professionals often recommend that adults get an average of 7-9 hours of sleep each night. As people age, the amount of sleep required tends to decrease, with individuals around 65 years old averaging fewer than 7 hours. Teenagers, on the other hand, often sleep more, with studies showing an average of 8.9 hours. It's worth noting that sleep needs can vary, and factors such as stress and lifestyle can impact the ability to achieve sufficient sleep. The National Sleep Foundation has offered guidelines that recommend varying amounts of sleep, highlighting that there are individual differences. To maintain healthy sleep, it's suggested to stick to a consistent sleep schedule and avoid stimulating activities before bedtime.