HealthyLife Articles

Tag: alertness

  • How Caffeine Affects Your Brain

    WELL-BEING

    Two people walking and talking.

    Every day, millions of people wake up with a hot cup of coffee or tea. Caffeine in these products helps you feel alert. But how does caffeine work – and what does it do to your brain?

    Adenosine and sleepiness

    Your body naturally makes a chemical called adenosine. It builds up in your body during the day. As levels get higher, you start to feel tired.

    Caffeine blocks adenosine from working on brain cells. This prevents you from feeling sleepy. But it can’t fool your body forever. Over time, your body makes more adenosine. Then you need more caffeine to get the same “perk-up” effects.

    Adenosine is one of the reasons it’s hard to quit caffeine. When you suddenly stop, your body must start making lower levels of adenosine again. This takes time. You might feel more tired or get headaches while your body adjusts.

    Sensitivity varies

    Have you ever had too much caffeine? You might feel sick to your stomach or like your heart is racing. You may also feel anxious or nervous.

    But not everyone has this reaction. Some people break down caffeine faster than other people. How fast you process caffeine depends on your genes.

    Who should skip caffeine?

    Avoid caffeine if you have:

    *  Acid reflux or other digestive problems

    *  Trouble sleeping or sleep disorders

    *  High blood pressure

    *  Heart conditions

    Children, teens and women who are pregnant or breastfeeding are often advised to stay away from caffeine, too.

    Is caffeine safe?

    For most healthy adults, a little caffeine each day is OK. But choose sources without lots of added sugar, such as overly sweetened coffee drinks and sweet teas. And if you’re tired all the time, make sure you’re:

    *  Getting enough sleep

    *  Eating a healthy diet

    *  Drinking enough water each day

    *  Getting regular exercise, which can boost your energy levels

    Talk to your doctor if you have questions about caffeine and your health.

    Source: National Institutes of Health

    © American Institute for Preventive Medicine

  • Boost Your Exercise With Caffeine

    BE FIT

    Caffeine does more than just give you energy. It can improve exercise performance too. And if you are someone who struggles with motivation, caffeine may give you the mental boost you need to get moving.

    Caffeine may help you get just a little more out of your exercise session. It may improve:

    *  Muscle endurance

    *  Speed of movement

    *  Muscle strength

    *  Aerobic endurance

    *  Alertness and focus

    Make caffeine work for you:

    *  Consume a dose of caffeine an hour before you exercise.

    *  1-3 mg caffeine per pound of body weight has been shown to be most effective.

    *  One cup of coffee has about 100 mg of caffeine.

    *  Energy drinks and other forms of caffeine can also work. But be wary of what else may be in them and read the label carefully.

    *  Talk to your doctor before taking any supplements.

    *  Don’t overdo it! More is not better and won’t give any additional benefit.

    © American Institute for Preventive Medicine

  • Avoid Drowsy Driving 2

    SleepWell® Program

    Week 2

    Image of a drowsy driver.

    Driving while sleepy can severely impair your driving and cause an accident. Studies have linked sleepiness and fatigue to decreases in reaction time, decision making, and mind and body coordination. All of these factors are very important for safe driving.

    According to estimates from the American Automobile Association (AAA), one out of every five deadly traffic accidents is due to drowsy driving. More than one-quarter of drivers admitted to driving in the past month while having trouble keeping their eyes open. (Source: AAA, 2014.)

    Drive when you feel alert. On long drives, plan 15 minute breaks to get out and stretch your legs every two hours.

    Closing your eyes for even a second (called microsleep) can be enough to travel blindly far down the road (or off the road). If you drive while you are fatigued, you and anyone around you is at serious risk.

    Signs of fatigue:

    *  You can’t stop yawning

    *  You have trouble keeping your head up

    *  Your eyes close for a moment or go out of focus

    *  You have wandering, disconnected thoughts

    *  You have no memory of driving the last few miles

    *  You miss seeing a sign or your exit

    *  You slow down when you don’t mean to or break suddenly or too late

    *  You drift across the road or veer off onto rumble strips

    What to do:

    *  Pull to the side of the road or go to a rest stop

    *  Take a 15-20 minute nap. If you can, have 250-300 mg caffeine (amount in 2 cups of coffee) before the nap.

    *  Get a non-drowsy person to drive or find some way of getting home without driving yourself

    *  Drive to a motel or place where you can sleep

    © American Institute for Preventive Medicine

  • Avoid Drowsy Driving

    Healthylife® Weigh

    Part 3

    Alert driver.

    Driving while sleepy can severely impair your driving and cause an accident. Studies have linked sleepiness and fatigue to decreases in reaction time, decision-making, and mind and body coordination. All of these factors are very important for safe driving.

    According to estimates from the National Safety Council in 2017, one out of every five deadly traffic crashes is due to drowsy driving.

    Drive when you feel alert. On long drives, plan 15-minute breaks to get out and stretch your legs every 2 hours. Avoid using food to stay alert. Closing your eyes for even a second (called microsleep) can be enough to travel blindly down the road (or off the road). If you drive while you are fatigued, you and anyone around you is at serious risk.

    Signs of Fatigue

    *  You can’t stop yawning.

    *  You have trouble keeping your head up.

    *  Your eyes close for a moment or go out of focus.

    *  You have wandering, disconnected thoughts.

    *  You have no memory of driving the last few miles.

    *  You miss seeing a sign or your exit.

    *  You slow down when you don’t mean to or brake suddenly or too late.

    *  You drift across the road or veer off onto rumble strips.

    What to do:

    *  Pull to the side of the road or go to a rest stop.

    *  Take a 15-20-minute nap. If you can, have 250-300 mg of caffeine (about 2 cups of coffee) before the nap.

    *  Get a non-drowsy person to drive or find some way of getting to your destination without driving yourself.

    *  Drive to a motel or place where you can sleep.

    © American Institute for Preventive Medicine

  • Energy, Learning, And Focus

    Healthylife® Weigh

    Part 5

    Senior couple exercising in gym.

    Improved Energy Levels

    Exercise helps transport oxygen and nutrients to your tissues. When your heart and lungs are working more efficiently, you have more energy to work, do daily chores, keep up with active kids, and have fun.

    Improved Ability to Learn

    Exercise increases production of cells in the brain responsible for memory and learning. Exercise can help with decision-making and higher-level thinking. Exercise also helps increase brain volume and reduce the number and size of age-related holes in the brain. This decreases the risk for dementia and Alzheimer’s.

    Improved Focus

    Exercise that requires hand-eye coordination or quick foot work helps your brain cells grow. These exercises, like tennis or basketball, may improve your concentration skills better than more simple exercises, like riding a stationary bike.

    © American Institute for Preventive Medicine

  • Drugs That May Affect Your Driving

    MEDICAL NEWS

    Image of women at store reading the medicine label.

    Certain over-the-counter medicines, known as OTC or nonprescription drugs, may affect your ability to drive.

    Read the Drug Facts label and use the medicine exactly as directed, advises the FDA.

    Look for such statements as “you may get drowsy,” “marked drowsiness will occur,” “be careful when driving a motor vehicle or operating machinery,” or “do not drive a motor vehicle or operate machinery when using this product.”

    Some of these seemingly harmless drugs for allergies or an upset stomach are not harmless at all, even though you can buy them without a prescription.

    Certain medications may make you drowsy fairly quickly. Their effects can last several hours. Others may cause “hangover-like” effects, even the next day.

    Common OTC medicines that can cause drowsiness or impaired driving are antihistamines (often used for a runny nose or watery eyes), antidiarrheals (used to treat or control diarrhea), and anti-emetics (taken for nausea, vomiting, or dizziness).

    © American Institute for Preventive Medicine