Sleep Ability: A Key to a Well-Rested Life Sleep is an essential biological need, and our ability to achieve restful, restorative sleep — what might be called sleep ability — is a key factor in our overall health and quality of life. Sleep ability refers to how well a person can fall asleep, stay asleep, and achieve the deep and restorative sleep stages the body needs. A person with good sleep ability typically falls asleep within 10 to 20 minutes of going to bed, sleeps through the night with minimal disturbances, achieves adequate amounts of both light and deep sleep as well as REM sleep, and wakes feeling refreshed and energized. This combination of sleep efficiency and sleep quality is central to daytime functioning and long-term wellbeing. Sleep ability can be influenced by a range of factors, including age, overall health, stress levels, sleep environment, lifestyle habits, and the presence of sleep disorders. As we age, the ability to sleep deeply and without interruption often decreases, which is why sleep problems become more common in older adults. There are many strategies that can enhance sleep ability. Maintaining a consistent sleep schedule, creating an optimal sleep environment (dark, quiet, and cool), establishing a calming bedtime routine, avoiding caffeine and alcohol close to bedtime, and engaging in regular physical exercise are all evidence-based approaches that support better sleep. For those who consistently struggle with sleep ability despite adopting good sleep habits, cognitive behavioral therapy for insomnia (CBT-I) or consultation with a sleep specialist may be beneficial in identifying and addressing underlying barriers to restful sleep.