In one sentence, describe what the following article is about: Before making any kind of dietary or bodily changes, you should get a full evaluation from the doctor. If you have a preexisting condition like high blood pressure or high cholesterol, your doctor may advise against gaining weight. Always take your doctor's advice seriously before making this kind of change. Certain medical conditions will require you to keep your weight up. Thyroid problems, digestive health issues, diabetes, and cancers may all lead to severe weight loss that may endanger your health. Being underweight can lead to health risks like a weakened immune system, anemia, hair loss, and decreased bone density. Very high physical activity can also cause you to be underweight. If you're an athlete, gaining some fat may be good for you because it can increase your energy levels and allow you to workout for longer periods. You'll need a clear plan as you proceed with your weight-gain plan. How much do you want to gain? By when? By figuring this out and drawing up a schedule, you'll be able to gain weight more effectively. Start by figuring out how much weight you want to gain. This can either be a personal goal, or one you've worked out with your doctor or dietitian. Either way, you need a concrete number in mind to start your progress. Remember, the basic way the body gains weight is when you take in more calories than you burn. So when drawing up your plan, you should figure out how much you need to eat every day to offset the amount of calories you burn. There are various ways to calculate this. Try this link for a tool to estimate your daily calorie burn: http://www.caloriecount.com/tools/calories-burned Read Set Meaningful Goals for more advice on how to set and stick to a goal. Flooding your body with hundreds of more calories than it's used to is dangerous for your heart, blood pressure, digestion, and other body systems. Work your way up gradually to acclimate your body to the increased caloric intake. Start off with 200 extra calories a day for a week or so, then increase to 300, and so on. This will help you avoid an initial shock when you start your weight-gain regimen. Break your weight-gain down into stages. Determine how much you would like to gain per week or month. That way, you can ease your body into the weight increase instead of starting off too quickly. Just like with losing weight, gaining weight should come gradually. Gaining about 1/2 to 1 pound per week is a healthy way to go (done by adding 250 to 500 more calories to your daily intake). Don't increase your daily caloric intake more than 500 calories. You'll have to eat much more in order to gain weight. Focus on nutrient and calorie dense foods instead of junk food. There are plenty of foods that will help you gain weight and also contain all of the nutrients you need to stay healthy. Plan on eating more than three meals a day. Increase your meals to five or more per day, which may include snacks throughout the day. Make sure all your meals have a good balance. Each meal should contain carbohydrates, protein, and unsaturated fats. These three nutrients will help most with your weight gain. Eating more often and including healthy foods in your diet will get expensive. It would also be helpful if you drew up a new budget to go along with your new diet. In addition to gaining fat, gaining muscle may also lead to a weight increase. Starting a strength-training regimen will put all of those nutrients you've been eating to good use. Gaining muscle will help make sure you keep up your strength and overall health while you gain fat.
Summary: Visit the doctor. Set your goal. Plan to start slowly. Draw up a meal plan. Plan on doing some strength training.

In one sentence, describe what the following article is about: You can do this by from inside or outside Paint: Inside Paint: Open MS Paint by clicking the Desktop icon or locating it in the Start menu. Once Paint is open, click File and then Open. Find and select the image that you want to invert, and then click Open. Outside Paint: Right-click the image file, select Open with, and then choose Paint. It's at the top of Paint. This will immediately invert the colors. For a quick invert, simply press Ctrl+I.
Summary: Open your image in MS Paint. Click the Image menu. Click Invert Colors on the menu.

In one sentence, describe what the following article is about: This substance is completely natural and safe for use around humans and pets, but it kills ants and other crawling critters. It's composed of ground up fossil pieces that cut into insects' exoskeletons when they walk over it. Sprinkle diatomaceous earth in corners, under the sink, in windowsills, and anywhere else you often see ants. Every week or two, vacuum up the diatomaceous earth and replace it with fresh powder. This substance doesn't work as well in humid areas, since it loses its sharpness when it becomes wet. If you have a lot of black ants on your carpeting, cover it in a fine layer of baking soda, let it sit for a few hours, then vacuum it up. You can also apply cornstarch to a surface and vacuum it up immediately before you try to vacuum up the black ants. The added cornstarch in the vacuum will suffocate the animal. Certain natural sprays act as insect repellents. You can easily make your own by adding 10 drops of essential oil to a cup of water, then pouring it into a spray bottle. Spray the mixture all over your house to keep ants away. Here are a few essential oils to try: Eucalyptus oil (don't use this one if you have a cat) Tea tree oil Lavender Peppermint Lemon Windex You might already have a box in your laundry room. This household substance doubles as a very effective insecticide. Simply sprinkle boric acid in corner and around room perimeters. Ants and other critters will die after crawling over the powder. If you don't have any other repellent on hand, try sprinkling some cinnamon in the room where the ants are gathering. Ants are repelled by the fine powder and strong smell. While sprinkling cinnamon won't kill the ants, it might keep them from coming back.
Summary:
Use diatomaceous earth. Use baking soda to clean carpets. Try an essential oil spray. Use boric acid. Try cinnamon powder.