Cancer is the second leading cause of death among guys in this country. And while there have been lots of medical advancements towards treating some kind and boosting survival, there is still lots of work to be done.

That’s why your best bet is to play the preventive game: You have to work on ways to reduce your risk of getting cancer in the first place.

So we asked physicians and researchers how they dodge America’s number two killer. One answer is obvious: don’t smoke. Here are 10 more ways these experts protect themselves from cancer.

WEAR SUNSCREEN

Your skin wins your body’s prize for “most likely to get cancer.” Every morning, dermatologist Joseph Sobanko, M.D., of the University of Pennsylvania, uses generic broad-spectrum SPF 30 sunscreen with either zinc or titanium dioxide. He shuts his eyes and sprays an even coat on his face after he brushes his teeth and combs his hair. We like Kiss My Face Mineral Spray SPF 30 Cool Sport ($12, amazon.com).

preview for 4 Things Most Guys Get Wrong About Skin Cancer

EAT THE RIGHT FOODS

A diet rich in vegetables, fiber, and omega-3 fats can curb inflammation and help fight cancer. Philippe Spiess, M.D., a genitourinary oncologist at Moffitt Cancer Center, eats what he calls a “power egg breakfast wrap.” He heats 1/4 cup of frozen spinach in a pan and mixes it with an egg and 200 milliliters (nearly a cup) of egg whites. The cooked mixture then goes into a whole wheat wrap with a pinch of cheese, a third of an avocado, and a tablespoon of hot sauce.

Related: 5 Foods That Are Proven to Fight Cancer

POP LOW-DOSE ASPIRIN

Aspirin does more than soothe aches and stifle heart attacks; it curbs colon inflammation. Daniel Rosenberg, Ph.D., director of the Colon Cancer Prevention Program at University of Connecticut Health, tells everyone he knows to take 81 milligrams a day. Ask your doctor first, because some people run the risk of excessive bleeding.

“If your doctor approves, you should do it,” he says. In a study review in Annals of Internal Medicine, people who took 75 to 1,200 milligrams of aspirin daily for at least a year reduced their risk of dying of colorectal cancer by 33 percent over 20 years.

Related: 7 Signs Of Colon Cancer You Should Never Ignore

PITCH PLASTIC

June Chan, Sc.D., a professor of urology at UC San Francisco, packs her lunch—but not in plastic, which may contain cancer-promoting chemicals. She packs salad (kale, feta, pumpkin seeds, raisins) in a mason jar. For more substantial grub, go with the stainless-steel 3-in-1 ECOlunch-box ($25, container store.com).

Related: A Beginner’s Guide to Meal Prep 

GET ENOUGH EXERCISE

Keith McCrae, M.D., an oncologist with Cleveland Clinic Cancer Institute, works long hours but fits in exercise six days a week. He loves road biking—25 to 30 miles most weekdays, more on weekends.

A study in JAMA Internal Medicine found that people who did 1.25 hours of vigorous or 2.5 hours of moderate activity a week had a 31 percent lower risk of dying of cancer than those who didn’t work out. Exercise helps tame inflammation, possibly reducing cancer risk.

Related: 6 Indoor Cardio Workouts That Don’t Involve a Treadmill

TAKE A SKIN SUPPLEMENT

Anthony Rossi, M.D., a dermatologist at Memorial Sloan Kettering Cancer Center, takes nicotinamide each morning with water and food. Nicotinamide is a form of vitamin B3 that may reduce the formation of certain skin cancers, possibly by blunting the cell damage induced by UV rays. (But taking it doesn’t exempt you from using sunscreen.) Always check with your doctor before starting a new supplement, of course.

Related: 7 Sunscreen Mistakes That Might Be Setting You Up For a Serious Burn

SNACK ON NUTS

When Matthew Yurgelun, M.D., a medical oncologist at Dana-Farber Cancer Institute, needs a snack, he eats almonds or pistachios.

“It’s a great way to quell hunger and keep me from snacking on fatty or sugary foods that can contribute to weight gain and obesity-related diseases, such as cancer,” he says.

A National Institutes of Health study even showed that smokers who snacked on nuts reduced their risk of lung cancer, possibly because nuts curb oxidative stress associated with smoking. Eat 20 to 24 nuts a day. Carry them in an Altoids tin (a perfect fit) or try Eden Foods Pistachios Pocket Snacks (edenfoods.com).

Related: How Walnuts Can Fight Your Cravings 

ORDER THE FISH

UCLA urologist Christopher Saigal, M.D., eats fish but not meat. A typical dinner is a salmon fillet with brown rice and vegetables. Try it twice a week.

“I tell patients that ‘heart healthy’ foods have been associated with a lower risk of developing prostate cancer and a lower risk of progression of prostate cancer after diagnosis,” he says. Plus, a U.K. study review linked red and processed meats with colorectal cancer.

Related: Should You Get the PSA Test to Screen For Prostate Cancer?

CALM DOWN

Chronic stress can feed cancer. Here’s your 15-minute prescription from urologist Nelson Bennett, M.D., of Northwestern University Feinberg School of Medicine: Sit with the door closed, phone silenced. Inhale deeply through your nose and exhale from your mouth 10 times. Close your eyes and notice the sounds around you—even the hum of fluorescent lights. Then bring your thoughts to your breaths. Don’t worry if your mind wanders.

It took Dr. Bennett about 15 sessions to get comfortable. “The more I practiced it, the easier it got,” he says. You’ll get positive reinforcement: less stress with deadlines and better focus on demand.

Related: 19 Ways to Live a Stress-Free Life

SIP ON GREEN TEA

Green tea is packed with antioxidants. Alan Wan, D.O., a medical oncologist at Northwestern Medicine Kishwaukee Hospital, has a cup each morning. In a 2016 study, Mao Feng green tea ($9 for 3 ounces, fusionteas.com) had one of the highest antioxidant levels per brew.