Longevity medicine is the new buzzword in health and wellness, and there’s a plethora of information available about it. There are supplements, such as resveratrol and NAD+, that are geared toward slowing down the aging process; there are peptides like BPC-157, Epitalon, Thymosin Alpha-1 and collagen; and beyond that, there’s far-infrared sauna, red-light therapy, biohacking and strength training that are getting attention.

While it can be hard to figure out where to start and what’s right for you, it’s helpful to know there are several ways to get started that don’t require much decision-making and don’t cost anything.

You don’t need fancy wearables, high-end supplements, or an ice bath in your backyard to start optimizing your biology. Not everyone has the disposable income for more expensive options. Here are three of my favorite science-backed, zero-cost practices to support your energy, hormones, metabolism, mood, and yes, even your longevity. They are simple, everyday habits that anyone can incorporate into their routine. What matters most is consistency and knowing how to work with your body, not against it.

Start with your goal. Focus on making these practices part of your daily habits. You’ll probably start feeling the benefits almost immediately, and that will keep you motivated to continue.

Protein is so important, especially as we age. Many of my clients begin to feel the results quickly when they focus on high-protein meals, especially in the morning. Eliminating high-carb meals, such as cereal, pasta without protein or sugary drinks—even those with protein!—can provide a quick boost. 

The habit is to eat, in grams, your goal weight in pounds. If your ideal weight is 150 pounds, for example, aim for 150 grams of high-quality protein per day, such as lean meats, fish, eggs, dairy products, legumes and nuts. There are several benefits to this new habit.

Helps maintain muscle. A diet rich in high-quality protein helps prevent muscle loss, or sarcopenia. Protein helps maintain and rebuild muscle mass, which naturally declines with age, starting at around the age of 30 and accelerating after 50, thereby reducing frailty and the risk of falls.

Supports strength. Maintaining muscle strength by eating enough protein improves physical function, independence and quality of life in older adults.

Improves metabolic health. Protein helps regulate your appetite, enhances your satiety, supports blood sugar control and might even aid in fat loss by preserving lean muscle mass. 

Counteracts anabolic resistance. As we age, our muscles become less responsive to protein intake, a condition known as anabolic resistance. To stimulate muscle synthesis effectively, more protein is necessary.

Supports immune function and tissue repair. When you get enough protein, your body is better able to maintain immune health and repair tissues, which is crucial for recovery from illness or injury, especially in older adults.

Linked to longer, healthier life. Maintaining muscle mass and metabolic health through getting an adequate amount of protein is associated with a reduced risk of disability, hospitalization and mortality in aging populations. 

Be sure to spread your protein intake evenly across the day and aim for 30 to 50 grams per meal or snack.

Is your digestion sluggish, especially after your evening meal? You’re not alone. Feeling tired after a big meal is a common problem in today’s world. Eating high-protein meals can help, and so can walking after meals. 

Take a short walk for about 10 to 15 minutes after each meal, especially after dinner. A light stroll around your home, neighborhood or workplace counts; nothing strenuous is required. Here are some of the benefits:

Better blood sugar regulation. Stable blood sugar levels help prevent chronic metabolic diseases, such as diabetes and cardiovascular disease, both of which are linked to premature aging and increased mortality.

Aids digestion. Some movement after eating can support better digestion by stimulating gut motility, helping food move smoothly through the digestive system.

Reduces inflammation. Improves glucose control and lowers systemic inflammation, which is widely recognized as accelerating aging and age-related diseases.

Improves metabolic flexibility. Repeated post-meal activity trains your body to switch more smoothly between burning carbs and fat, which supports a healthy metabolism and reduces metabolic stress.

Enhances overall physical health. Increased daily movement supports cardiovascular health, muscle function and mental well-being—all crucial for healthy aging.

Aim to walk within 15 to 30 minutes after eating to catch the window when blood sugar spikes occur. Don’t have 15 minutes? A brief walk of two to five minutes has been shown to benefit blood sugar control when longer walks aren’t feasible. Remember, every little bit counts.

Go outside within 30 to 60 minutes of waking up, without sunglasses and without looking through windows. Don’t look directly into the sun, but aim to get natural light directly into your eyes to reset your body clock properly. How this helps: 

Resets/anchors your circadian rhythm. Exposure to morning light sends a strong signal to your internal clock, helping regulate sleep and hormone rhythms. This translates into higher-quality rest, which in turn supports repair, mental clarity and healthier aging.

Improves mood and mental health. Exposure to morning light increases serotonin levels and alertness, which support mental well-being and cognitive health — both of which are linked to longevity.

Promotes metabolic/cardiovascular health. Exposure to morning light also improves metabolic health, blood sugar control and cardiovascular function—all essential for healthy aging.

Supports melatonin regulation. Proper melatonin production in the evening helps you fall asleep naturally and enter deep restorative sleep phases. Good sleep patterns reduce the risk of related diseases and improve lifespan.

Boosts vitamin D synthesis. UVB rays in the morning sunlight help your skin produce vitamin D, which helps reduce the risk of illness and chronic inflammation and is essential for bone health and immune function.

Enhances immune function and reduces inflammation. Vitamin D produced through sunlight exposure helps regulate the immune system, thereby reducing the risk of illness and chronic inflammation.