Heart rate variability, or HRV, is one of the most useful numbers your Garmin watch tracks, but it is also one of the most misunderstood. HRV measures the time variation between your heartbeats, and a higher score generally means your body is ready to handle stress. The most effective way to improve your HRV on … Read more
Muscle twitches are sudden, involuntary contractions in a small group of muscle fibers. They are usually harmless and often tied to everyday factors like stress, fatigue, or too much caffeine. Most twitches last only a few seconds and resolve on their own, but understanding why they happen can help you know when to ignore them … Read more
An annual physical exam is one of the few times you sit down with a doctor specifically to check your overall health, not to treat a symptom. Preparation is simple: gather your medical history, list your current medications, write down your concerns, and bring any recent test results. A little organization before you arrive helps … Read more
Diarrhea causes metabolic acidosis because the body loses large amounts of bicarbonate-rich fluid from the intestines. Bicarbonate is the body’s main buffer for neutralizing acid in the blood. When severe diarrhea removes this bicarbonate faster than the kidneys can replace it, acid builds up in the bloodstream and the blood pH drops. This is a … Read more
Italian wedding soup is a broth-based soup with small meatballs, leafy greens, and pasta or rice. The name comes from the Italian phrase minestra maritata, which means “married soup” — a reference to how the greens and meat “marry” in flavor, not to actual weddings. For most people, yes, Italian wedding soup can be a … Read more
A CT scan, which stands for computed tomography, is a medical imaging test that combines X-rays with computer processing to create detailed cross-sectional pictures of the body. Unlike a standard X-ray that shows bones and some soft tissue in a flat, overlapping image, a CT scan produces clear, 3D-like images of organs, blood vessels, and … Read more
An ultrasound can often see the appendix, but it is not a guarantee. Success depends heavily on the person’s body size, the position of the appendix, and the skill of the technician. For many people, an ultrasound is the first imaging test used when a doctor suspects appendicitis, but a negative result does not always … Read more
When you cut carbohydrates from your diet, your body runs out of its preferred fuel source and switches to burning fat instead. This metabolic shift is called ketosis, and it is the core mechanism behind how a low carb diet works burning fat for fuel. Your liver converts stored body fat into molecules called ketones, … Read more
Heat makes blood vessels widen, not narrow. This widening is called vasodilation. When your body gets too hot, it sends more blood to the surface of your skin so heat can escape into the air. This is why your skin flushes red on a hot day or after a workout. The opposite happens when you … Read more
Gray hair is a normal part of aging, but it can also be a source of frustration. Hair turns gray when the pigment-producing cells in the hair follicle slow down or stop working. In most cases, this process is permanent, but certain medical conditions can cause reversible gray hair. Here is what science says about … Read more