You know exercise builds muscles, strengthens bones, keeps your heart healthy and your mind sharp. But it also does something that you might not think much about: It helps keep your immune system — your internal defenses against infection — in tip-top shape.
If you take time for some physical exertion each day, it helps get your body ready to attack bacteria, viruses and toxins that can sneak in and make you sick.
But how much exercise is effective? Do too little or too much, and it won’t have the best effect on your immune system.
Clinical immunologist Leonard Calabrese, DO, answers common questions about how exercise can impact your immunity and how to use your workouts to shut out a world of would-be invaders.
Q: How does breaking a sweat boost immunity?
A: If you exercise moderately on a regular basis, it tunes up the immune system in many ways. It enhances your broad-based defenses against viral infections, such as those causing upper respiratory infections.
Working out regularly also reduces the risk of many chronic diseases such as cardiovascular, respiratory illnesses and metabolic diseases, such as type 2 diabetes.
Q: How much exercise do you need?
A: Fortunately, you don’t have to push yourself to the limit to rev up your immune system. In fact, your immune system needs less of a workout than you get with your average cardio routine.
Focus on getting 20-30 minutes of moderate exercise, five days a week, and your immune system will thank you.
Q: What types of exercise are most helpful?
A: Moderate exercises, including biking or walking briskly in your neighborhood, are good ways to get your blood flowing. Swimming is also a good option for non-weight-bearing exercise for your joints.
Also try mind-body exercises such as Tai-Chi, Qi Gong and yoga, which are all options that help keep your joints flexible. These exercises also reduce chronic stress, which in itself is a powerful immune booster. These exercises can also help alleviate osteoarthritis and fibromyalgia symptoms.
Q: Can too much exercise set your immune system back?
A: Yes, though, the level to which it can slow your system down is still up for debate.
Research shows that exercising for more than 1.5 hours without refueling your body or giving it enough time to recover suppresses your immune responses for up to a few days. During that time, your cortisol levels rise, your white blood cell count drops and you’re more likely to develop a respiratory infection.
This problem usually affects elite athletes, such as marathon runners, most.
On the flip side, staying sedentary also increases your risk of infection, inflammation and chronic disease.
Q: Can exercise make an illness worse?
A: Yes, it can. This is a complex issue, but I like to tell my patients to do a “neck check.” If your symptoms are mostly of a mild cold without fever or lower respiratory symptoms, such as a productive cough, wheezing or shortness of breath, mild exercise can actually reduce congestion and may make you feel better.
If your symptoms are primarily in your lungs or you have a significant fever its better to rest until things settle down. Regardless, good hydration is important.
I’m not a regular drinker, nor a teetotaler. But like many people, I enjoy the occasional glass of wine with dinner, and nothing tastes better than an ice-cold beer on a sweaty summer day. Besides, some alcohol is a toast to my long-term heart health. At least that’s what the science says, right? Not really. When it comes to alcohol and heart health, the existing research is quite conflicting — some studies say alcohol improves heart health, while others imply the opposite.
Alcohol and heart health: What’s the real story?
The problem with most alcohol-related research is that it consists almost entirely of observational studies that only show an association, according to Dr. J. Michael Gaziano, a preventive cardiologist with Harvard-affiliated Brigham and Women’s Hospital’s Division of Aging and VA Boston.
So far, the strongest evidence with heart health has shown that alcohol can increase levels of HDL (good) cholesterol. HDL works to keep LDL (bad) cholesterol from clogging your arteries by moving it to the liver, where it’s broken down and removed from the body. Many studies have found that the combination of high HDL and low LDL levels protects against heart attacks and stroke. “However, this is not the most important factor in preventing heart disease, and there are other ways to increase HDL than drinking alcohol, such as regular exercise,” says Dr. Gaziano.
Quantity is a key factor when it comes to alcohol and heart health
While moderate amounts of alcohol can offer some heart benefits, too much can have damaging effects.
For instance, the more alcohol you drink at one time, the higher your heart rate gets, according to research from the European Society of Cardiology. A sudden spike in heart rate is potentially dangerous to people with heart conditions, as it could trigger arrhythmias (irregular heartbeats).
A study in the April 14, 2018, issue of The Lancet looked at the drinking habits of almost 600,000 people without heart disease, and found that people who had 10 or more drinks per week died one to two years earlier compared with those who drank five drinks or fewer per week. Having 18 drinks or more per week cut life expectancy by four to five years.
Focus on moderation
The lack of consistent data means that the takeaway message here is moderation — and the importance of avoiding excessive and binge drinking.
How much is considered moderate? A safe amount is no more than a drink per day, says Dr. Gaziano. “In terms of heart health, there does not appear to be more benefit beyond one daily drink.”
Of course, alcohol content can vary with the type and size of drink. In the United States, a standard drink is approximately 14 grams of pure alcohol, which equates to any one of these:
12 ounces of regular beer
5 ounces of wine
1.5 ounces of 80-proof distilled spirits
1 ounce of 100-proof spirits.
To get a more accurate analysis of your drink in terms of alcohol content per serving size, use this drink calculator from the National Institutes of Health.
One type of drink isn’t better than another, as your body reacts to alcohol the same whether it’s from beer, wine, or spirits, according to Dr. Gaziano.
Matthew Solan is the former executive editor of Harvard Men’s Health Watch. He previously served as executive editor for UCLA Health’s Healthy Years and as a contributor to Duke Medicine’s Health News and Weill Cornell Medical … See Full Bio
Have you ever thought of physiotherapy treatment for your headache?
There are numerous different types of headaches including migraine, tension type headaches and headaches arising from the neck. Many headaches can be caused by reduced movement in the neck, having the neck in a certain position, increased tightness or tension in the neck muscles and sustained poor postures e.g. sitting at a computer.
Physiotherapy treatment may involve mobilising the joints of the neck, soft tissue massage, trigger point release and stretching of neck muscles and retraining muscle strength and coordination.
Cabbage often—and unfairly—gets overlooked, with flashier veggies and protein-dense superfoods getting all the attention. But as far as nutritional food options go, the leafy green is pretty hard to beat. A staple in different cuisines (American coleslaw! Middle Eastern malfouf! Chinese suan la bai cai!), cabbage has been a longtime favorite amongst global chefs.
“Much of this stems from its versatility,” Woldy Reyes, chef and author of the cookbook In the Kusina: My Seasonal Filipino Cooking, tells Vogue. “We are seeing a growing trend of chefs utilizing it as a centerpiece, such as cabbage steaks, rather than as a side dish. The culinary appeal has never been stronger.”
“Its popularity stems from its ability to transform,” adds Tatiana Mora, chef of plant-based Michelin star restaurant Mita. “It can be eaten raw, fermented, steamed, roasted, or sautéed, consistently providing flavor, texture, and nutrition. I love it because it is a noble vegetable that grows easily, keeps well, and can be used almost entirely, making it perfect for a conscious and respectful approach to cooking.”
It’s accessible, easy to cook, and delicious. Here are all the reasons cabbage deserves a seat at your table (get it?) in 2026.
What is cabbage?
Cabbage is a leafy green that is part of the brassica plant family (which also includes broccoli, cauliflower, brussels sprouts, and kale), says Amy Shapiro, RD, registered dietitian and founder of Real Nutrition. It comes in several varieties, but the most common ones you’ll see are green, red (or purple), and savoy. What makes cabbage different from other leafy greens is its density and durability. “It’s heartier, stores longer, and holds up well to cooking, fermenting, and shredding,” Shapiro says. “Nutritionally, it shares many benefits with other cruciferous vegetables, but it’s often milder in flavor and more versatile across cuisines.”
The Benefits
Besides its versatility, one of the main benefits of cabbage is its many nutrients. Shapiro lists other main benefits of the leafy green:
Supports Gut Health
Shapiro says that, because cabbage contains fiber and other compounds that support digestion, eating this leafy green can benefit the gut bacteria and boost gut health.
Anti-Inflammatory Properties
Cabbage is also rich in antioxidants and phytonutrients that studies have shown can reduce inflammation, she says.
Boosts Heart Health
Along with fiber, cabbage has potassium, which supports healthy cholesterol levels and blood pressure. Cabbage also has vitamin K, which is essential for blood clotting (and bone health). Shapiro points to red cabbage in particular, which she says contains antioxidants called anthocyanins that studies have shown can improve brain and heart health.
Regulates Blood Sugar
Cabbage is low in calories and carbs while being high in fiber, which can help stabilize glucose levels in the body.
It seems that "exercise snacks" can be a good way to improve your health. Research shows that short bursts of activity done during the normal course of your day can help you build fitness – with no sweating required. Listen in as exercise physiologist Katie Lawton explains. pic.twitter.com/4dpEiWbCTM