Blue Memo

  COVID-19: What Is It, What Are the Symptoms, and What Should We Do If We Get Infected? COVID-19 may no longer dominate the news the way it did during the pandemic, but it has not disappeared. Recently, COVID-19 infections have been increasing again in many places, reminding us that the virus is still part of our lives. For some people, the infection may feel like a mild cold or flu. For others, however, it can be much more uncomfortable and exhausting. I recently experienced COVID-19 myself, and one of the most difficult parts of the illness was not necessarily the fever or respiratory symptoms. It was the severe muscle aches and back pain that stayed with me for quite a long time. In this post, I would like to talk about what COVID-19 actually is, its common symptoms, how we can prevent infection, what to do if we become infected, and finally, my own personal experience with the illness. What Is COVID-19? COVID-19 is an infectious disease caused by the SARS-CoV-2 virus. The viru...

  Cold vs. Flu: What I Learned After Mistaking One for the Other Introduction For many years, I thought a cold and the flu were simply different names for the same illness. Whenever I had a runny nose, a sore throat, or a fever during the colder months, I would casually say, “I caught a bad cold.” I never paid much attention to the differences between the two because most of my illnesses eventually improved after a few days of rest. However, that belief changed after I experienced what I later realized was probably the flu. The symptoms were not just stronger than a normal cold—they appeared differently, progressed faster, and affected my entire body. That experience taught me that recognizing the difference between a cold and the flu is important, not only for recovery but also for knowing when to slow down and take better care of myself. This article shares what I learned from my experience, the key differences between the common cold and influenza, and the practical habits that ...

  Drinking Albumin in South Korea: What It Is, Benefits, Side Effects, and My Personal Experience If you have visited a pharmacy or health food store in South Korea, you may have noticed products called drinking albumin . These beverages have become increasingly popular among people looking to reduce fatigue, recover after illness, or simply support their overall health. I decided to try one myself, and while everyone's experience is different, I noticed some positive changes that I would like to share. What Is Albumin? Albumin is the most abundant protein found in human blood. It is produced by the liver and plays several essential roles in the body. Albumin helps maintain fluid balance by preventing water from leaking out of blood vessels. It also transports hormones, vitamins, fatty acids, and certain medications throughout the body. Many Korean drinking albumin products do not contain human albumin. Instead, they are usually made from egg white albumin , a high-quality protein...

  Magnesium Supplements: Benefits, Uses, Side Effects, and My Experience Why Magnesium Might Be the Most Underrated Mineral for Your Health When people think about essential nutrients, vitamins such as Vitamin C or Vitamin D usually come to mind first. Yet one of the most important nutrients for overall health often goes unnoticed: magnesium . Magnesium is an essential mineral involved in more than 300 biochemical reactions throughout the body. It plays a critical role in muscle function, nerve signaling, energy production, heart health, and even quality sleep. Despite its importance, studies suggest that many adults fail to consume enough magnesium through their daily diet. Modern lifestyles—including processed foods, chronic stress, poor dietary habits, and certain medical conditions—can all contribute to low magnesium levels. Over time, an inadequate intake may affect everything from energy levels to cardiovascular health. If you've ever wondered whether magnesium supple...

  The Ultimate Guide to Healthy Weight Loss: Proven Tips, Real Experience, and Sustainable Results Discover science-backed diet strategies, practical weight loss tips, and personal lessons that can help you lose weight without sacrificing your health. Why Most Diets Fail Millions of people start a diet every year, but many regain the weight within months. The problem isn't usually motivation—it's choosing a plan that is too restrictive to maintain. Successful weight loss isn't about starving yourself or following the latest fad diet. It's about building healthy habits that become part of your lifestyle. The goal shouldn't simply be to lose weight. It should be to become healthier, stronger, and more energetic. What Is Healthy Weight Loss? Healthy weight loss means reducing body fat while preserving muscle mass and maintaining good nutrition. Experts generally recommend losing 0.5–1 kg (1–2 pounds) per week . This gradual pace is more sustainable and helps ...