Pu’er Coffee

 For many people, that first cup of coffee in the morning is the switch that turns the brain on. But more and more coffee lovers are noticing a frustrating change: You used to handle three or even four cups a day without breaking a sweat. Now? Half a cup and your heart is pounding, your chest feels fluttery, and you start wondering: “Is something wrong with my heart?” “Am I really just getting old?” The good news: you don’t need to panic. Coffee-induced heart flutters are usually not a sign of disease. They come from how your body interacts with caffeine. Today, let’s break it all down clearly—so you can keep enjoying your coffee with peace of mind. 1. Heart palpitations after coffee = caffeine doing its job First, let’s get one thing straight: feeling a bit jittery or noticing a faster heartbeat after drinking coffee doesn’t usually mean something is wrong. It’s simply caffeine doing what caffeine does. The main effect of caffeine is activating your sympathetic nervous s...

 For many people, that rich, aromatic cup of coffee each morning is more than a ritual—it’s the fuel that jumpstarts the day. But have you ever wondered what happens to your body when you drink coffee day after day, month after month? Today, let’s talk about three surprising changes your body may experience after a full year of consistent coffee drinking. 1. Your Metabolic Rate Increases You may have noticed that a cup of coffee doesn’t just wake up your mind—it seems to energize your entire body. There’s real science behind this. When caffeine enters the body, it gently stimulates the central nervous system and signals fat cells to break down stored fat. At the same time, caffeine boosts adrenaline levels, putting your body into a “ready-for-action” mode that accelerates fat breakdown and energy usage. After consuming caffeine, your metabolic rate can increase by 3%–11% for about three hours. That may sound small, but over time, it means your body burns more energy during...

  For anyone just stepping into the world of coffee, staring at a café menu can feel like reading hieroglyphics. So today, we’re skipping the complicated theories and going straight into the six real things every coffee beginner should know. Ready? Let’s unlock the hidden skills of black coffee! What exactly is black coffee? Put simply, black coffee is a pure love story between water and coffee beans—nothing else. No sugar, no milk. Just the original flavor of the beans, presented in the most honest way. Just like tea lovers drink tea without sweeteners, and whiskey drinkers appreciate a neat pour, anyone who wants to truly understand coffee should start with a cup of black coffee. Some people take their first sip and immediately frown— “Why is it so bitter?” Relax. You’re about to open the door to a whole new world. Why do fitness lovers always carry a cup of black coffee? 1️⃣ Almost zero calories A 200ml cup of black coffee has only 7 calories —basically the same as...

 Morning—coffee aroma wakes up a new day. Afternoon—a cup of milk tea sweeps away the drowsiness. Late at night—energy drinks keep people going, whether they’re working overtime or gaming. In our fast-paced modern lives, there’s one substance often called the “gentlest stimulant”— caffeine . Without us noticing, it quietly shapes our daily rhythm. It’s the most widely consumed psychoactive substance in the world, with about 90% of adults taking it in one form or another. Caffeine can boost alertness, but it may also bring health risks. So how do we use this “double-edged sword” wisely? Let’s take a scientific look. What Exactly Is Caffeine? Caffeine is a natural alkaloid, chemically known as 1,3,7-trimethylxanthine , and it appears in over 60 plants including coffee beans, tea leaves, cocoa beans, and guarana berries. In nature, caffeine is a plant’s “secret weapon.” It can paralyze leaf-eating pests, protecting the plant, while its presence in nectar helps attract pollinator...

 “Every time I drink coffee, I have to run to the bathroom within half an hour—it’s like my body has an alarm clock.” “I drink two cups of coffee every day, but I often feel bloated and constipated. Sometimes I even wonder if I should just give up coffee.” On October 16, the hashtag “The first batch of coffee lovers has fallen victim” started trending online. Netizens shared their very different gut reactions to coffee—some experience diarrhea, while others get constipated. Caffeine’s Dual Effect: It Can Both Relieve and Cause Constipation Why can the same cup of coffee produce two completely opposite effects? According to Cui Jun, Chief Dietitian at Beijing Electric Power Hospital, coffee’s impact on digestion is the result of multiple factors—mainly caffeine stimulation and acidic compounds. Caffeine stimulates stomach acid secretion and speeds up intestinal movement. A single intake of 100 mg of caffeine (roughly one espresso) can increase intestinal motility by nearly 3...