7 Habits for Longer Life Together – Backed by Science

February 12, 2026 at 2:35 pm

The secret to a longer life is not a myth, nor is it highly dependent on genetics, as is popularly believed. The key to increasing your life span is a cumulation of habits backed by scientific data that improve your overall physical and mental health. Here are the seven habits you and your partner need to adopt to make sure you live a long and healthy life.

Quit Smoking Together

Smoking is the leading cause of death, preventable disease, and disabilities in adults in the US. As an active smoker, you are predisposed to multiple types of cancers, including but not limited to cancers of the lungs, liver, colon, cervix, and Acute Myeloid Leukemia (AML), among others. In addition, you are three times more likely to die early than your non-smoking peers.

However, all hope is not lost; quitting the habit is possible—and easier when you do it together. One study revealed that if you quit smoking before age 35, you can enjoy up to an extra 8.5 years added to your life. This means more anniversaries, more adventures, and more time with the person you love.

Couples Tips for Quitting:

Set a quit date together and celebrate it annually as your "second chance anniversary"
Replace smoking breaks with short walks together
Save the money you would have spent on cigarettes for date nights or a dream vacation
Support each other through cravings with texts, calls, or distractions
Celebrate milestones together - one week, one month, one year smoke-free

Beyond greatly increasing your life expectancy, quitting smoking will have you experiencing a better quality of life through minor changes, like the return of your sense of smell and taste, and major changes, like reduced financial expenses.

Reduce Your Alcohol Intake as a Team

When an occasional drink becomes a necessity, you should know you are at high risk of liver and pancreatic diseases, cardiovascular diseases, and diabetes, just to name a few chronic illnesses. Ultimately, excessive consumption of alcohol reduces your quality of life and life expectancy. If you consume approximately 25 drinks or more in a week, you are reducing your life expectancy by up to five years, according to a 2018 study.

While quitting cold turkey is not recommended, especially without professional medical help, it is possible to reduce your alcohol intake and enjoy numerous health benefits. These benefits include an improved immune system and better sleep patterns.

Five tips for couples to reduce alcohol intake:

Share your plan together — make it a joint commitment and hold each other accountable lovingly
Opt for smaller sizes — enjoy your favorite drinks but in smaller glasses, and toast to more sober moments together
Explore alcohol-free date ideas — morning hikes, museum visits, cooking classes, or game nights
Set a weekly drinking budget together — once depleted, wait until the next week and discover new non-alcoholic rituals
Support each other's "no" — back each other up when declining drinks at social events

Cook and Eat Healthy Plant Foods Together

It is not enough to just extend your lifespan; the ultimate goal is an extended lifespan with improved health. Studies have associated adherence to plant-rich diets with reduced mortality rates. Healthy plant foods supply the body with nutrients and antioxidants such as vitamins, ascorbic acid, and polyphenols.

These foods play a critical role in protecting your body’s tissues and reducing your risk of cancer, heart disease, and neurodegenerative diseases. The consumption of vegetable-heavy diets rewards you with an extensive healthy life span.

A PLOS Medicine study reports that enriching your meals with more vegetables, legumes, and fruits and reducing your intake of red and processed meats could extend your lifespan by 10 to 13 years.

Couples' Kitchen Habits:

Plan and cook meals together—it's quality time that doubles as health investment
Start a couples' garden with herbs, tomatoes, or peppers
Try "Meatless Mondays" together and explore new plant-based recipes
Visit farmers markets together and make it a weekly date
Prep healthy snacks together for busy weeks
Challenge each other to try one new vegetable or fruit each month

Exercise Regularly as Partners

Adults are recommended to engage in at least 150 minutes of physical activity weekly to slow down the aging of cells. These physical activities can range from moderate to vigorous intensity and include workouts, walks, gardening, swimming, etc. Besides, following and exceeding this recommendation can see you get a 28%-35% smaller risk of premature death.

Some of the major health benefits of regular physical activity include:

Reduced risk of developing some common cancers such as stomach, kidney, colon, and lung cancers.
Strengthened bones and muscles help you sustain good mobility as you age and experience a decrease in muscle mass and muscle strength.
Reduced risk of suffering from cardiovascular diseases and developing type 2 diabetes.
Improved brain health contributes to reduced depressed moods, reduced risk of dementia, and better sleep quality.
When it comes to exercising regularly, age, size, disabilities, or shape should not hold you back — even as little as 15 minutes of physical activity daily can increase your lifespan by 3 years or more.

Couples' Workout Ideas:

Morning walks or evening strolls—hold hands and talk about your day
Join a dance class together (salsa, ballroom, swing)
Bike rides on weekends to explore new trails
Couples' yoga or partner stretching
Tennis, pickleball, or hiking adventures
Home workouts where you spot each other or follow the same routine
Sign up for a charity 5K together
Swimming or water aerobics as a low-impact option

Manage Stress and Anxiety Together

Research by the Finnish Institute for Health and Welfare reported that being under heavy stress can reduce your lifespan by up to 2.8 years. Stress and anxiety impact not only your mental health but your physical health as well. Failure to manage your stress and anxiety will make you more prone to a stroke or heart disease.

While stress and anxiety are unavoidable in life, here are five simple tips you can employ to manage them as a team:

Stress Management for Two:

Make time to relax and unwind regularly together — board games, puzzles, watching favorite shows, or just talking without distractions
Keep a couples' journal — share thoughts, dreams, and stressors; use it to identify patterns and support each other
Strengthen your connection — prioritize quality time together, have regular check-ins about each other's well-being, and remember that your relationship is your stress buffer. Social isolation poses as many health risks as smoking 15 cigarettes daily—but being in a supportive relationship protects against this
Practice mutual self-care — encourage each other to sleep well, take breaks, exercise, and seek help when needed
Try relaxation techniques together — couples' yoga, meditation, aromatherapy massages for each other, visualization exercises, or breathing techniques

Prioritize Healthy Sleep—Together

Experiencing healthy sleep refers to getting the right amount of sleep — not too much and not too little. Consistently sleeping for too long (over 9 hours a night) can increase your chance of premature death, while consistently not getting enough sleep (less than 5 hours a night) increases your it by 12%.

Not getting enough sleep has been proven to impair your immune function — the biggest functions of sleep are to help cell regulation in your body and facilitate healing. Furthermore, lack of sleep puts you at risk of developing obesity, diabetes, and cardiovascular diseases.

On the other hand, excessive sleeping negatively impacts your mental health and puts you at a greater risk of suffering a stroke. Overall, having a regular pattern of uninterrupted sleep (ideally 7-8 hours) will increase your lifespan.

Couples' Sleep Tips:

Establish a bedtime routine together—wind down at the same time
Create a sleep-friendly bedroom: cool, dark, and device-free
Go to bed and wake up at consistent times together
If one partner snores or has sleep issues, address it together (sleep apnea treatment can save lives!)
Avoid screens 30 minutes before bed—use that time to talk or read together
Consider a comfortable mattress that works for both of you
Practice relaxation together before bed—gentle stretching, reading, or gratitude sharing

Support Each Other's Supplement Routine

Even with the consumption of many healthy plant foods, you need to boost your body with vitamin, mineral, and protein nutrients from supplements as you grow older to increase your lifespan.

To ensure maximum well-being, you can take:

Vitamin D and Calcium — for healthier, stronger bones to prevent falls, breaks, and fragility in movement.
Omega-3 fish oil — to reduce inflammation in the body, prevent arthritis pain and promote brain health.
Melatonin — to help regulate your sleeping patterns.
Probiotics — to balance the bacteria in your gut, thus improving gut health and protecting you from stomach cancer.
Glutathione — to enhance your body’s ability to efficiently get rid of toxins, especially in old age.
Nicotinamide mononucleotide (NMN) — to repair age-related DNA damage, support the immune system, improve metabolism, and more.
Quercetin – to get rid of senescent cells – senescent cells are viewed as a hallmark of aging because they can inhibit the proper function of the surrounding tissue. Removal of these cells can rejuvenate the tissues and, therefore, contribute to longevity.

While you may not have power over death, thanks to science, these seven habits can be your roadmap to a long, healthy life.

Start with just one habit this month. Support each other. Celebrate small victories. And remember: every healthy choice you make together is an investment in your future—a future filled with countless more Valentine's Days to come.

Here's to growing old together—happily, healthily, and hand in hand.