Maintaining muscle mass may play a key role in preventing dementia, as aging often leads to pronounced changes such as decreased mobility and loss of strength. Age-related muscle loss is an inevitable event that affects the physical as well as the mental state of humans. New research suggests maintaining skeletal muscle can be key to supporting cognitive functions and may even play a role in preventing dementia.

A study presented at the Radiological Society of North America's annual meeting revealed that elderly patients with lower skeletal muscle mass had about a 60 percent higher risk of dementia. Skeletal muscle forms one-third of our body weight and tends to atrophy with age, and that muscle decline has broad-ranging effects, from increased physical frailty to potential cognitive decline, said Dr. Marilyn Albert, a professor of neurology at Johns Hopkins University.

The researchers measured the size of the temporalis muscle, which is part of the jaw region, as a marker of overall skeletal muscle health. Their findings showed a clear link between reduced muscle mass and an elevated risk of dementia. This connection highlights the urgent need to prioritize muscle maintenance, particularly as age-related conditions like sarcopenia and anabolic resistance pose additional challenges.

Why Muscle Maintenance Becomes Harder With Age

This begins around the age of 30. Then, there is a loss of 3-5% muscle mass every decade. But the decline is faster for those aged 50. Contributing factors include sarcopenia, an umbrella syndrome causing progressive loss of muscle and bone mass. And there is anabolic resistance - reduced skeletal muscle synthesis of protein, making it difficult to build and maintain muscle in the presence of exercise.

Despite these challenges, strength training and endurance exercises remain effective strategies to rebuild muscle and enhance overall health.

5 At-Home Strength Exercises to Build and Maintain Muscle

Fortunately, you don't need to join a gym to maintain muscle strength. Here are five simple yet effective exercises into your routine to help preserve muscle mass and support cognitive health.

1. Calf Raises

• Stand with feet shoulder-width apart. Lift onto your toes, keeping your core tight. Hold for 1-2 seconds, then lower back down. Repetitions: Perform 15 reps for 2-3 sets.
• Benefits: Improves lower leg strength and balance.

2. Plank

• Lay face-down and position forearms on the ground. Stretch legs back and curl toes under.
• Press your body against the ground, with it straight and core tight.
• Repetitions: 15-20 seconds holds for 2-3 sets.
• Benefits: Strengthens the core, shoulders, and back muscles.

3. Squat Into Chair

• Stand a half step away from a chair.
• Lower into a squat until you nearly touch the chair, extending arms forward.
• Return to standing, bringing arms back in.
• Repetitions: Repeat for 2-3 sets of 10-15 reps.
• Benefits: Strengthens the muscles in the legs as well as helps to better your posture.

4. Elevated Pushups

• Position hands on a wall with feet shoulder-width apart.
• Perform a push-up and lower toward the wall, then return to beginning.
• Repetitions: Do 2-3 sets of 10-15 reps.
• Benefits: Stretches chest, arms, and shoulders with minimal strain.

5. Wall Angels

• Stand with your back against a wall, pressing hips, shoulders, and elbows into the wall.
• Push your arms up into a "Y" shape and then back down.
• Repetitions: Do 10-15 reps for 2-3 sets.
• Benefits: Helps to improve shoulder mobility and posture.

Additional Tips for Muscle Maintenance

Safety and effectiveness are guaranteed by following the given tips:

1. Always warmup at the start and cool down at the end to avoid being injured.

2. Maintain proper posture and control during every movement.

3. Progressively increase weights or resistance bands as strength is enhanced.

4. Complete each movement slowly in order to achieve control and to avoid straining.

5. Give your muscles time to recover and rebuild between sessions.

As of November 19, 7am, Delhi's AQI as per the official data stands at 388, however, as per aqi.in, the average AQI of the city stands at 601 at 8.50 am. While there has been data discrepancies, as a result of which, people have come to street to protest against the continuous worsening air quality of the national capital. Amid this, Dr Manan Vora, a Mumbai-based orthopedic surgeon and sports doctor shared some tips to stay safe amid polluted air.

While watching a video of a person cleaning their clogged air purifier, Dr Vora says, "Your air purifiers can change filters but your lungs cannot," and suggests the following 5 tips:

Creation Of Clean Room

The first tip Dr Vora shares is to create a clean room, which can reduce exposure of pollutants by 60 to 70%. This could be achieved by an air purifier. He suggests everyone to decide one room in the house and shut its doors, and windows during peak hours, and turn on air purifier only in that room. "This alone curbs your exposure by 60 to 70%," he says.

Wear N-95 Mask

The doctor advises to wear an N-95 mask whenever someone is stepping outdoors. He mentions that a cloth or a surgical mask won't protect them against the pollutants, as N-95 masks are the only protective gears with filters that can keep the pollutants out when you breathe. "Only N-95 blocks the same particles clogging the purifier," he says, referring to a video of cleaning a clogged air purifier's filter.

Skip Morning Walks

"Skip your morning walks," he suggests. "AQI is highest at the sunrise and breathing rate triples while exercising. This means you inhale three times more pollution per minute," he says.

This happens because pollutants accumulate overnight, and without wind or sunlight, PM2.5 or the particulate matter stays trapped near the ground, leading to pollution being at its peak by sunrise. As per the data by aqi.in, highest AQI is always registered between 6am to 9am.

Use Wet Mop

Dr Vora suggests that while cleaning your house, instead of dry dusting, use a wet mop, this reduces dust particles. "Dry dusting pushes all the particles back into the air," he says.

Hydrate Your Self, Check On Your Check

The fifth tip he shares is to stay hydrated and consume vitamin C and other antioxidant-rich foods. As per the National Institutes of Health (NIH), US, vitamin C increases resistance to various viral and bacterial infections. A 2007 study published in the Journal of the Royal Society of Medicine noted that vitamin C or its supplement could in fact help patients with pneumonia or other lung-related disease. Thus vitamin C is a good boost for when lungs are at high risk, all thanks to the pollution.

The doctor also suggests the consumption of amla or Indian gooseberry and turmeric to boost your immunity. However, the doctor notes that while they do not cure pollution, but consuming these may reduce inflammation caused by pollutants.

"You cannot fix the AQI of your city, but you can control how much of it enters your body."

There is a certain satisfaction that comes after powering through a tough HIIT session. You expect that fresh, healthy glow at the end, but some people instead end up with a face that looks bright red, which can make them feel uneasy once they leave the gym.

To help you get back to your favourite spin class or running route without second thoughts, we turned to dermatologists to understand why this happens and how to calm it down. Here is what actually causes that red flush after exercise and what you can do to manage it.

Why Is My Face Turning Red After Doing Workout?

Your face often reddens during a workout because your body sends more blood to the skin and your temperature rises. The blood vessels on your face open wider to help release heat. It is simply your body cooling itself while supplying oxygen to the muscles that are working.

Vascular Changes Cause Flushing

The encouraging part is that a flushed face after working out is usually a normal part of how the body reacts to exertion. As your temperature rises, sweat helps cool you down, but your body also shifts blood flow and widens vessels near the surface of the skin. This can show up as a red or flushed look. Blair Murphy, MD, FAAD, a board-certified dermatologist in New York City, explains that this post-workout redness happens because the small blood vessels in the facial skin open up. The face tends to show it more clearly because it has many surface-level blood vessels.

People Prone To Flushing May Have More Superficial Capillaries

This kind of flushing appears in certain people simply because they have a greater number of capillaries near the surface. During exercise, your heart pumps faster to carry more oxygen to the muscles. The capillaries expand to move that oxygen efficiently while also carrying heat outward to help regulate temperature.

Your overall fitness level may also play a role. As blood flow increases, skin cells can release different substances in different individuals. Some may release prostaglandins, which add to the redness, while others may release histamines, which can also trigger flushing.

Flushing May Be More Noticeable In Fair Skin Tones

According to Arash Akhavan, MD, FAAD, a board-certified dermatologist in New York City, everyone experiences flushing during exercise, but it is more visible in people with lighter skin because deeper pigment in darker skin tones can hide mild redness. He also notes that some people naturally have a more extensive network of tiny blood vessels, making their skin appear redder after exertion.

How To Prevent Facial Flushing?

Opt for lightweight clothing: You cannot completely stop redness during exercise, but you can take simple steps to reduce it. Try working out in a cooler setting and wear loose, light-coloured clothing to help your body regulate heat.

Avoid alcohol and excessive sun exposure: If your skin already flushes easily, alcohol before a workout is not a good idea. Corey L. Hartman, MD, board-certified dermatologist and founder of Skin Wellness Dermatology, explains that alcohol widens blood vessels and increases facial redness. Too much sun can also irritate the skin and make surface capillaries more visible by causing them to dilate.

Stay away from potentially irritating skincare: Those who flush often or have rosacea should avoid skincare that can irritate the skin further, including alcohol-heavy products, highly acidic creams, or strong retinoids. Dr. Akhavan recommends choosing calming, non-irritating products with ingredients like hyaluronic acid, vitamin C, and niacinamide.

Vitamin C is especially helpful because it protects the skin from oxidative stress and helps shield against UVA and UVB rays, which can intensify redness. Fragrance should also be avoided since it can trigger irritation and increase flushing.

Researchers at University College Cork, led by Professor Yvonne Nolan, have found key biological reasons why exercise can help protect your mental health, even if you eat a typical Western diet high in fat and sugar. Your diet plays a huge role in keeping your brain healthy. Studies have shown that eating processed foods can increase your chances of developing memory and thinking issues.

However, this one habit can help you keep these issues at bay, according to researchers. The study, published in the journal Brain Medicine, shows that regular running can reduce symptoms similar to depression that are often caused by unhealthy eating. These protective effects involve changes to your gut and hormones.

Can You Eat Junk If You Exercise Enough?

To figure out how diet and exercise influence the brain, the researchers studied adult male rats for seven and a half weeks. One group of rats ate a standard healthy diet, while the other group ate a rotating "cafeteria diet" of high-fat, high-sugar foods (like ultra-processed meals).

In both diet groups, half of the animals were given a running wheel to exercise freely. This setup allowed the team to clearly see the separate and combined effects of the poor diet and physical activity on the animals' mood and brain.

The main finding was positive

Voluntary running had an antidepressant-like effect on the rats, even those eating the unhealthy cafeteria diet. This suggests that getting regular physical activity can be helpful for a person's mood, even if they struggle to completely change their eating habits.

Mood and Memory

While the unhealthy diet didn't severely harm the rats' learning or memory skills, exercise slightly improved their ability to navigate. The researchers also noticed mild anti-anxiety effects from exercise that occurred regardless of what the animals were eating.

Can Your Diet Affect Your Mental Capacity?

The high-fat, high-sugar diet severely messed up the chemicals produced in the gut (called metabolites). The researchers analyzed the contents of the caecum (a part of the large intestine) and found that the unhealthy diet affected 100 out of 175 chemical compounds they checked.

Exercise helped to restore the balance, particularly increasing three metabolites—anserine, indole-3-carboxylate, and deoxyinosine—that are known to be important for regulating mood.

The study did find one complex finding related to brain growth. In rats that ate the standard, healthy food, exercise strongly boosted adult hippocampal neurogenesis (the creation of new brain cells in the hippocampus, the area linked to memory and emotion).

However, the cafeteria diet prevented this usual exercise-induced increase in new brain cells. This suggests that while exercise helps mood regardless of diet, a poor diet might actually stop the brain from fully gaining some of the deepest, cellular-level benefits of physical activity.

Is Exercise Good For Your Mental Health?

This research has important real-world meaning. As an accompanying editorial noted, the fact that "exercise has an antidepressant-like effect in the wrong dietary context... is good news" for people who find it very hard to switch to a perfect diet.

The findings give biological proof that exercise can be an effective tool for improving mental well-being even when facing the challenges of modern, processed foods.

Future research will need to study women and explore longer periods of exercise, but this study provides a strong foundation for using lifestyle changes to support mood and brain function.