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  1. www.webmd.com › diet › how-long-caffeine-lastsCaffeine: How Long Do Its Effects Last? - WebMD

    2023年7月12日 · The levels in your bloodstream peak an hour later and remain there for several hours. About 6 hours after you consume caffeine, half of it is still in your body. Caffeine may not completely clear ...

  2. www.webmd.com › diet › how-caffeine-affects-your-bodyCaffeine: How Much Is Safe and How It Affects Your Body Syst ...

    2023年5月2日 · Increased Alertness. Caffeine is a stimulant. In the brain, it blocks the effects of a chemical called adenosine, which makes you feel sleepy. You then feel more alert and energetic, which is why ...

  3. www.webmd.com › pill-identificationPill Identifier - Find Pills by Color, Shape, Imprint, or ...

    2021年1月14日 · Use WebMD’s Pill Identifier to find and identify any over-the-counter or prescription drug, pill, or medication by color, shape, or imprint and easily compare pictures of multiple drugs.

  4. www.webmd.com › vitamins › aiGREEN COFFEE: Overview, Uses, Side Effects, Precautions, ...

    Green coffee contains caffeine, but in lower amounts than in regular coffee. One cup of green coffee contains about 25-50% of the amount of caffeine found in a one cup of regular coffee. Consuming ...

  5. www.webmd.com › hypertension-high-blood-pressure › ssPictures of Foods That Lower Blood Pressure

    Sprinkling of Seeds. 6 /15. Add unsalted seeds like pumpkin, flax, and sunflower to salads, yogurt, or oatmeal to help lower your blood pressure. Seeds are a source of vital minerals like ...

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  6. www.webmd.com › mental-health › ssSigns You’re Mentally Exhausted - WebMD

    2024年3月21日 · 1 /15. It’s kind of like physical tiredness, except it’s your mind instead of your muscles. It tends to show up when you focus on a mentally tough task for a while. You might also feel this ...

  7. www.webmd.com › diet › ssSigns That You May Be Dehydrated - WebMD

    2022年6月1日 · When to Call Your Doctor. 11 /15. When you see symptoms of severe dehydration, call your doctor right away. It can hit kids quickly, so it’s best to check in sooner rather than later. Signs ...