We Asked 4 Oncologists the Healthiest Habit to Start Before 9 A.M.—They All Said the Same Thing

 Not occurring, still getting my 7 hours of sleep in.

We Asked 4 Oncologists the Healthiest Habit to Start Before 9 A.M.—They All Said the Same Thing

This daily morning habit can set your day on the right track and may even help lower your cancer risk.

Reviewed by Dietitian Katey Davidson, M.Sc.FN, RD, CPT

Key Points

• Oncologists recommend a morning walk as a simple habit for better health.
• It supports a healthy weight, regular physical activity and circadian rhythm alignment.
• While it may lower cancer risk, a well-rounded lifestyle is even better.

No single habit can prevent cancer, a complex disease caused by changes in genes that affect how cells grow and multiply. Genetics, the environment and lifestyle can all contribute to cancer. While some risk factors are out of our control, about 40% of cancer cases are linked to lifestyle habits we do have control over, like smoking, diet and exercise.

A good place to start is your morning habits, which have a positive ripple effect on the rest of your day, adding up to meaningful benefits when it comes to protecting against cancer and other chronic diseases.

That said, not everyone has time for an elaborate morning routine. So, we spoke with four oncologists about the healthiest morning habit, and they all said the same thing: going for a morning walk, ideally outside.

“While no single activity can guarantee cancer prevention, incorporating a morning walk before 9 a.m. into your routine can contribute to a healthier lifestyle and potentially lower your cancer risk for several reasons,” says Tracy Proverbs-Singh, M.D. Keep reading to learn why oncologists agree that a morning walk is one the healthiest habits to do in the morning.

Why Oncologists Love a Morning Walk

It Boosts Physical Activity

Exercise is one of the best habits for health, longevity and lowering your cancer risk. A 30-minute brisk walk or run outside on a regular basis improves weight and blood sugar control, sleep quality, memory, mood and blood pressure, says Lary Robinson, M.D. 

Tingting Tan, M.D., Ph.D., adds, “Regular physical activity is associated with a reduced risk of several cancers, including breast, colon and endometrial cancers.” Exercise can help keep cancer at bay by regulating hormones, lowering inflammation and keeping your weight in a healthy range.

 Related video: Protecting your circadian rhythm with one easy habit (WKRN Nashville)

Even better, you don’t have to run a marathon to gain these benefits. “A 2025 National Cancer Institute study found that greater daily physical activity, including light-intensity activity, was associated with a lower risk of cancer,” says Tan. “Higher daily step counts were also associated with lower risk.”

That means walking boasts big benefits, and going early in the morning could be even more beneficial, according to recent research. One study found that exercising early in the morning was linked to a 26% reduction in cancer odds compared to working out midday. “Even modest amounts of movement can make a difference,” says Tan. However, the study was observational, meaning a causal relationship can’t be established, and more research is still needed.

The American Cancer Society recommends getting 150 to 300 minutes of moderate-intensity exercise or 75 to 150 minutes of vigorous-intensity activity each week, or a combination of both. A 30-minute walk five mornings per week gets you 150 minutes.

It Aids Weight Management

Excess body weight is a risk factor for 12 different cancers, including breast, colon, kidney, liver and pancreatic cancer.

“Regular physical activity, such as a brisk morning walk, helps with weight management,” says Proverbs-Singh. Too much fat tissue can lead to inflammation, insulin resistance and hormone dysregulation, disruptions that may promote abnormal cell and tumor growth.

“Studies suggest that exercising in the morning, specifically between 7 a.m. and 9 a.m., may be associated with a lower body mass index (BMI),” shares Proverbs-Singh. This may be due to various factors, including a better diet the rest of the day and potential changes in metabolism. However, exercise at any time is still strongly linked with better weight management.

A morning workout could also help burn visceral fat, which is the dangerous belly fat that wraps around internal organs and is linked to an increased risk of cancer, as well as other chronic diseases. One study found that women who exercised in the morning lost more belly fat than evening exercisers, even though their weight didn’t change. However, evening exercisers had greater strength gains, suggesting the type of exercise may be influenced by the time of day. 

It Supports Circadian Rhythm

The circadian rhythm is the body’s internal clock that runs on a 24-hour cycle. It responds to external cues, such as sunlight, that tell the body when it’s time to go to sleep and wake up. It’s also responsible for hormone secretion, metabolism and cell repair.

Disruptions to circadian rhythm, like poor sleep, artificial light exposure in the evening and eating late at night, may put you at higher risk for chronic diseases, including cancer. The International Agency for Research on Cancer even classifies shift work involving circadian disruption as a “probable human carcinogen,” says Andrea Tufano-Sugarman, M.D.

Even if you don’t work at night, your circadian rhythm can still get out of sync, and getting outside first thing in the morning can help it get back into alignment. “Exposure to natural sunlight in the morning helps to regulate your body’s internal clock,” says Singh. It helps cortisol rise—like it’s supposed to do in the morning—and melatonin release at the proper time at night. While sitting in the sun delivers these benefits, you’ll get more bang-for-your-buck by going on a walk. Exercise, even light movement in the morning, has been shown to improve sleep quality, which further promotes a healthy circadian rhythm.

It’s Simple & Sustainable

The final reason oncologists recommend walking is because it’s simple and sustainable for most people. The habits you can stick to over time yield the biggest benefits. “You do not have to run several miles or spend an hour at the gym to benefit from being active,” says Tan. “Walking is accessible for many people, and starting the day with movement can make it easier to build activity into your daily routine.” 

Not a morning person or new to exercise? Start small with a 10- to 15-minute walk. If that’s all you have time for, it’s better than nothing. However, if you can work your way up to 30 minutes, more benefits abound.

To make it a habit you look forward to and can stay consistent with, go on a walk with a friend or listen to your favorite music or podcast. Can’t get outside? Consider buying a walking pad or joining a gym. And if you can’t make morning exercise work for your schedule, then do it whenever you can. Exercise at any time is beneficial for health.

Other Healthy Habits

Reducing cancer risk is about the choices you make consistently over time, says Tan. In addition to moving your body every day, these are the habits oncologists recommend focusing on to prevent cancer and improve overall health.

• Eat More Plants and Fewer Processed Meats. Plants, such as fruit, vegetables, nuts, seeds and whole grains, are rich in fiber, polyphenols and antioxidants that fight inflammation and free radicals. Processed meats, on the other hand, are linked to an increased risk of cancer, specifically colon cancer.
• Don’t Smoke. About 30% of cancer deaths are linked to smoking. Work with a provider who can help you quit smoking, which can reduce your risk of over a dozen types of cancer, not just lung cancer.
• Limit Alcohol. Even small amounts of alcohol may increase your risk of cancer, specifically esophageal, colorectal and breast cancers. No amount of alcohol has been deemed safe to drink.
• Wear Sunscreen. Wearing sunscreen when you go outside reduces your risk of various skin cancers, including melanoma.
• Drink Coffee. Drinking 1 to 4 cups of coffee per day is linked to living longer and reduced risk of numerous chronic diseases, including cancer. Moderate coffee intake may be protective against liver cancer and endometrial cancer, says Tan.
• Start Your Day with Gratitude and Prayer. “A few quiet minutes will help you set your intention for the day, reduce chronic stress and support emotional well-being,” says Tan.

Our Expert Take

No one habit can prevent cancer. Instead, reducing cancer risk comes down to a number of lifestyle habits like exercise, a nutritious diet, wearing sunscreen, managing stress, not smoking and limiting alcohol. However, if oncologists had to pick the healthiest morning habit, they’d recommend going on a morning walk, ideally outside. 

Getting outside for a morning walk boosts physical activity, helps keep your weight in a healthy range and exposes you to natural sunlight, keeping your circadian rhythm in sync and improving sleep. All of these can benefit your body at the hormonal, metabolic and cellular level, helping prevent chronic diseases, including cancer. 

Read the original article on EatingWell