Are You Getting Enough Sleep? Here's What You Actually Need in Your 20s, 30s, 40s and Beyond

For something that takes up close to one third of our lives, sleep is surprisingly confusing.

We’re told to get eight hours, buy a sleep tracker, stop drinking coffee after noon…the list goes on. Add in influencers promising the perfect nighttime routine and endless bedding options, and  no wonder so many of us feel like we’re doing it wrong.

But what does good sleep actually look like—and does it change as we age?

To find out, I spoke with a psychologist who specializes in sleep therapy about how much rest we really need and how sleep can shift throughout adulthood.

Meet the Expert

Dr. Joshua Tal is a licensed psychologist with a private practice in New York City. He specializes in insomnia treatment and has studied sleep under top clinicians and researchers at Stanford University, VA hospitals and rehabilitation centers across the country.

As anyone who’s ever pulled an all-nighter or had their slumber disturbed by a newborn will tell you, sleep is everything. Consistently getting too little rest has been linked to a number of physical health concerns, including high blood pressure, heart disease and weight gain. But the effects of poor sleep often show up most immediately in our mental health.

While good sleep supports attention, memory and learning, poor sleep can contribute to irritability, anxiety, low mood and bad decision-making. Over time, chronic sleep issues can also increase the risk of mood disorders like depression. That said, Dr. Tal says there’s no need to spiral after a few rough nights.

“The key message of the research is to prioritize sleep,” he says. But he stresses that the goal shouldn’t be perfect sleep every night, and instead suggests thinking about averages across the week while focusing on developing habits that support consistent, restorative rest over time.

If you’ve been chasing the mythical “perfect” eight hours every night, you’ll be relieved to know the science is more flexible.

“For the vast majority of adults, the ideal range is between seven and nine hours of sleep per night,” says Dr. Tal. And even that isn’t a strict rule. “I don’t like the idea that there’s one magic number and if you hit it you’re good and if you don’t you’ve failed,” he explains. (He’s wary of “sleep scores” from sleep tracking devices for this reason.)

Instead, what matters most is how you feel overall. “In general, you should feel alert. You should feel like your energy levels are good for most of the day.”

That seven-to-nine-hour range basically stays the same throughout adulthood. What changes instead are the life factors that make getting that sleep easier or harder. Here’s how those challenges evolve over the decades.

Your twenties are often when sleep starts shifting from teenage habits into adult routines. Work schedules and grown-up responsibilities typically mean earlier mornings, even if your natural sleep rhythm leans later.

At the same time, busy social calendars can throw sleep rhythms off balance. “I see patients in their twenties dealing with social jet lag,” Dr. Tal explains. “You might stay up late Friday night, sleep in Saturday, and then try to go to bed early Sunday for work. That can be a problem.”

Still, he emphasizes that sleep shouldn’t come at the expense of actually living your life. “We don’t live to sleep—we sleep to live,” he says.

The key is being aware of your sleep needs and remembering that consistency across the week matters more than the occasional late night.

Sleep in Your 30s

By your thirties, the things keeping you up at night often look very different to the previous decade. This is when many adults are juggling demanding careers, growing responsibilities and young kids. Nighttime wake-ups (whether from babies or stress) can make it harder to get consistent, good quality rest.

In this decade, focus on building a reliable wind-down routine that signals to your brain that it’s time to transition from the day’s stress into sleep. “Experiment with reading, watching a show, meditating, taking a bath or shower, music, aromatherapy—there are so many things to try,” says Dr. Tal. 

Sleep in Your 40s

In your forties, many of the same pressures from the previous decade (career, family, general life stress) can continue to affect sleep.

But for many women, hormonal changes related to perimenopause can also start to have an impact. Night sweats, temperature fluctuations and shifts in hormone levels may make it harder to stay asleep through the night.

Healthy sleep habits from previous decades still hold true here. Managing stress, maintaining calming evening routines and keeping a regular bedtime and wake time all help the body achieve rest.

Sleep in Your 50s and Beyond

It’s around this age that the body’s circadian rhythm tends to shift earlier, meaning people often go to bed and wake up earlier.

Dr. Tal also notes that issues that pop up in this decade and beyond are often less about falling asleep and more about maintaining sleep. Nighttime wake-ups may become more common due to factors like hormonal changes, sleep apnea or simply needing to use the bathroom. But waking occasionally during the night doesn’t necessarily mean something is wrong.

“Healthy sleepers wake up multiple times during the night,” Dr. Tal says. “It’s usually so brief that you don’t even remember it.”

One surprisingly powerful tip for those middle-of-the-night wake-ups? “Stop checking the clock! Turn it around, put tape on the TV clock—whatever you have to do. It’s huge.”

Your sleep needs may stay relatively consistent throughout adulthood—but life has a funny way of interfering with them. Whether it’s late nights in your twenties, work stress in your thirties or hormonal changes later on, every decade brings its own sleep challenges.

Whatever your age, the goal isn’t to get perfect sleep every night, but to understand what tends to throw yours off track and build routines that help you rest, recharge and feel like your best self.