INPUT ARTICLE: Article: This commonsense approach isn't always easy to adhere to when summer fun beckons, so it bears repeating.  Avoid activities in the noonday sun as much as possible.  It's best to limit your sun exposure between the hours of 10 a.m. and 4 p.m. each day during warmer months.  When you are outside during these times, limit your exposure as best as you possibly can.  Schedule activities early in the morning or later in the afternoon Some people are particularly vulnerable to heat and should stay in cool places during hot weather, such as children, the elderly, obese, redheads, gingers, and those who have health problems. While sunscreen doesn’t necessarily have a cooling effect, its protective effect is vital during warmer weather.  As well as being painful and damaging, sunburn can cause a fever and various signs of dehydration.  If left unchecked, sunburns can lead to heat exhaustion or heat stroke.  At the minimum, use SPF 15.  If you're planning on being outside for a while, SPF 30 would be a better option. Reapply often.  Every two hours is recommended, but it should be reapplied more often if you're swimming or sweating a lot. Apply roughly a shot glass worth of sunscreen to cover the entire body. Retreat to shade as much as possible.  Taking breaks under trees works doubly well because trees release water into the air that absorbs some of the heat.  While shade doesn’t lower the actual temperature, the lack of sunlight exposure makes it feel like the temperature is up to 15 degrees cooler. If a cool breeze comes by, that can feel like an additional lowering of 5 degrees in the shade. When it’s hot and sunny outside, a dip in cool water is refreshing.  Jumping into a pool is not always a choice.  Don’t forget low-maintenance options like sprinklers.  You could also try taking showers or baths with cooler than normal water to take the edge off.  Fill a spray bottle with pure water and place in the refrigerator at home or work. When you feel too hot, spray a fine mist of the cooled water over face and body to help cool you down quickly. Refill as needed and keep refrigerated.  Make a game of staying cool.  Gather friends and run through sprinklers.  Throw water balloons.  Have a squirt gun battle.

SUMMARY: Stay out of the sun while it's at its hottest. Wear sunscreen! Stay in the shade. Splash water on your skin.

In one sentence, describe what the following article is about: A doctor can determine the baby’s gestational age with an ultrasound by measuring the either the fetus' gestational sac, or the embryo or fetus, depending on stage of the pregnancy.  Gestational age, considered the age of the baby, is determined based on the last menstrual cycle rather than conception.  Subtracting two weeks from the gestational age will therefore give you a likely time of conception.  Gestational age (the age of the baby) can be measured by ultrasound as early as five or six weeks after your last menstrual cycle, and is easier to estimate between weeks eight and 18, since most babies grow at the same rate during this time. Your doctor takes measurements to determine how old the baby is based on size. Estimating conception with the help of ultrasound is not foolproof.  If you know the date of your last cycle and the gestational date determined by ultrasound is less than a week different, doctors still use your cycle date to predict when the baby will be born. An embryo may develop a heartbeat as early as six weeks after fertilization and the heart is formed by week eight.  During the second month of pregnancy, symptoms such as breast tenderness, nausea and vomiting, heartburn, and frequent urination begin.  See a doctor as soon as possible if you notice one or more of these symptoms to best estimate your date of conception with an ultrasound. If you do not know when your cycle started and don’t have access to or can’t get an ultrasound, a doctor can determine length of pregnancy around the 12th week by detecting if the uterus has grown over the pubic bone. This is the least reliable method and is only used to determine gestational age if the other two aren’t available.
Summary: Schedule an ultrasound. Ask for a physical exam.

Once the water has had an opportunity to run through the coolant system, reopen the petcock and drain the water into a container as well.  Allow it to drain completely before closing the petcock again.  This is the same process you would use to drain and flush your coolant system. The water will flush out the coolant that was elsewhere in the coolant system the first time you drained it. Reconnect the thermostat during this step. Refill the coolant system with a 50/50 mixture of coolant and water.  Ask the clerk at your local auto parts store to help you determine which coolant is the appropriate kind for your specific vehicle.  You can purchase pre-mixed coolant and water, or you may choose to mix it yourself. Add coolant through the radiator cap and give it a minute to drain into the system, then continue to add more until you reach the coolant capacity. Pour the head gasket sealer into the open radiator cap.  Read the instructions on the specific brand you purchased for instructions that may be unique to the type of head gasket sealer you chose. You can usually simply pour the sealer into the radiator cap along with the coolant and water. The sealer will need to travel throughout the coolant system in order to reach the head gasket.  Start the motor and allow it to run or drive the vehicle for fifteen or twenty minutes to allow the sealer to travel throughout the system.  Again, if the vehicle begins to overheat, stop the engine immediately. After fifteen to twenty minutes, stop the vehicle and allow it to sit for a few hours. Re-evaluate the head gasket leak in your vehicle using the same qualifications you used to determine there was an issue in the first place.  A head gasket sealer can be a fairly permanent solution in some situations, while it may fail to solve the problem at all in some others.  Keep an eye out for the symptoms of a leaking head gasket after using a head gasket sealer. Having the head gasket replaced is the only truly permanent solution to a leaking head gasket.
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One-sentence summary -- Open the petcock to drain the water. Fill the coolant system with a water and coolant mix. Pour in the head gasket sealer. Drive the vehicle for fifteen to twenty minutes. Re-evaluate the state of the vehicle’s head gasket.

INPUT ARTICLE: Article: The best way to strength train and run faster is to be consistent with your workouts. Try not to skip workouts even when life gets in the way. When you come home from a workout, take out your dirty clothes and put in what you need to be ready to go the next time. Take down as many barriers as you can to your workouts. That is, pick one that you can stick with. If you're not a morning person, you may not be able to stick to a morning schedule, so choose another time of day. Not only can a group encourage you to go faster, it means you are held accountable for showing up. If you always do the same workout everyday, you'll hit a plateau. By changing things up, you'll continue to strengthen your muscles. That's why important to practice cross-training. Try replacing running with cycling or swimming 1 to 2 days a week. Some days, you need a lesser workout to let your body have rest. You don't need to run full-out every day. Make sure your diet includes what you need to succeed. Eat balanced meals that include a substantial amount of fruits and vegetables, as well as a lean protein. Before your workout, eat a carbohydrate-rich snack, which will fuel your workout. Skip simple sugars, such as candies and juice, and grab more sustaining carbohydrates, such as whole grains and fruit. Your body needs rest to work properly and recover from muscle strain and soreness. If you have trouble remembering to go to bed on time, set an alarm 30 minutes before you should be in bed to remind you to wind down.

SUMMARY:
Be persistent. Keep your workout gear ready. Pick a convenient time for your workout. Run with a group. Change your training day to day. Take it easy. Eat right. Fuel your workouts. Get your sleep.