“Going to bed at the same time every night is part of good sleep hygiene and can help promote good sleep patterns and regularity,” Dr. Rivera says.

This nighttime routine can play a significant role in long-term health as “there are strong correlations between quality of sleep and healthy aging,” Dr. Rivera says.

For one, sleep supports the immune system, she says. In fact, quality sleep may enhance the effectiveness of your body’s T cells, a type of white blood cell that helps fight infection, according to a February 2019 study published in the ​Journal of Experimental Medicine​.

The opposite is true, too. If you log insufficient shut-eye, your immune defenses decrease. Meaning, you’re more likely to catch a cold and stay sick for longer when sleep deprived, per the Mayo Clinic.

Over time, lack of sleep can also increase your risk for obesity, diabetes and cardiovascular disease, thereby sabotaging the healthy aging process, according to the Mayo Clinic.

Poor sleep can even prevent your brain from optimal functioning, affecting mood, cognition and energy, Dr. Rivera adds.

Indeed, the structural and physiological processes that take place in the brain during sleep play an important role in memory consolidation and your ability to learn, problem solve and focus — all things necessary for your aging brain, according to Harvard Health Publishing.

A consistent bedtime is just one piece of the sleep puzzle that promotes healthy aging. Other sleep hygiene habits are equally important if you want to age gracefully.

“Good sleep hygiene is essential to achieve the highest quality of sleep possible,” Dr. Rivera says. Her top sleep hygiene tips are:

• Keep your bedroom environment cool, quiet and dark
• Avoid TV, reading and work in bed as these activities are stimulating (the same goes for scrolling on your phone)
• Limit alcohol and caffeine before bed

Sleep hygiene becomes even more crucial as we age. That’s because the “physiologic changes that occur with aging that may affect sleep for older adults,” Dr. Rivera says.

Indeed, older adults are more prone to problems falling and staying asleep. In advanced age, we tend to spend fewer hours in deep sleep.

We’re ​also​ more likely to struggle with sleep disorders (such as insomnia or restless legs syndrome) or sleep-sabotaging discomfort/pain related to chronic illnesses, according to the U.S. National Library of Medicine.

If you normally get the munchies when the moon’s up, the snack choices you make can either help lengthen or limit your longevity.

For instance, a diet abundant in added sugars can contribute to chronic inflammation in the body, which is associated with serious health conditions like heart disease, obesity, cancer and diabetes, per Harvard Health Publishing. (Sorry to say, but you might want to reconsider that nightly ice cream cone or candy bar.)

Besides, sugary foods or those high in carbohydrates might negatively impact sleep, Dr. Rivera adds.

That’s exactly what an August 2019 study published in the ​​American Journal of Lifestyle Medicine​​ concluded. Researchers found that higher daily sugar intake was linked to lower sleep quality. (This study included 100 females between the ages of 19 and 23, however, the finding can apply to all ages.)

Stretching is a great addition to the nighttime routine that might ease the aging process.

Not only does a quick stretch before bed help reduce stress and increase relaxation (which are both beneficial for boosting sleep quality), but it can also aid in alleviating common aches and pains that come with age.

For example, “leg cramps are common complaints that often disrupt sleep for older adults,” Dr. Rivera says. In fact, nearly a third of adults above age 60 will experience at least one of these painful, involuntary muscle contractions in the calf, foot or thigh every two months, according to the Cleveland Clinic.

Leg cramps are more common as we get older because our tendons — the connective tissues that link muscles to bones — shorten as we age, per the Cleveland Clinic. Stretching can help offset some of this tightness and help limit leg cramps.

What’s more, nighttime stretching can help lower your risk of injuries and falls, in particular. This is especially important for healthy aging since every year, a quarter of older Americans will take a spill, and a fifth of these falls will result in a serious injury, such as broken bones or head trauma, according to the CDC.

Standing on one leg while brushing your pearly whites before bed? OK, hear us out: Though it may sound strange, the simple act of shifting your weight to one leg while brushing your teeth is a wonderful way to support healthy aging.

Standing on one leg demands a level of balance. In fact, many daily tasks — from climbing stairs to stepping over a puddle — involve single leg balance. So, even if balance is not a primary goal while you’re young, the skill will be fundamental for independent living as you age.

Balancing exercises — like standing on one leg while brushing your teeth — can also help reduce your fall risk, per the CDC. The exercise also requires multitasking and coordination, which can benefit your brain, too. And that’s super helpful for healthy aging. The more often you challenge your brain with new and engaging tasks, the longer it’ll continue to perform at its best, according to the University of Utah.

While we’re on the subject of dental hygiene, flossing is another fantastic pre-bed ritual to add to your nighttime routine to promote the process of healthy aging.

Taking care of your teeth by flossing (and brushing twice) daily can keep bacteria that breeds in your mouth from reaching dangerous levels, which could cause serious oral infections, including gum disease, according to the Mayo Clinic.

How is this linked to longevity?

Overgrowth of bad oral bacteria, and inflammation from severe gum disease, may have harmful effects on overall health. More specifically, they may contribute to the development of diseases such as heart disease, clogged arteries, stroke, endocarditis (when the inner lining of your heart chambers or valves becomes infected) and pneumonia, per the Mayo Clinic.

Staying healthy in old age may simply require taking a few small steps — literally.

Going for short light-intensity walks after a meal can help decrease glucose spikes and improve blood sugar metabolism, according to a February 2022 systematic review and meta-analysis published in ​Sports Medicine​. And we mean short — just aim for two to five minutes.

This is good news for people who must closely manage blood sugar levels, like those with diabetes or an insulin resistance. Just a small walk can work wonders for your cardiometabolic health and as a result, help to lengthen your lifespan.