In one sentence, describe what the following article is about: Women that have recurrent or unexplained miscarriages often respond to treatment with progesterone, and are able to maintain the next pregnancy. Prevent early miscarriage. Progesterone deficiency is not the cause of every miscarriage, but scientific research indicates that adequate amounts of progesterone are needed to support the early stages of pregnancy. Progesterone levels naturally increase during each menstrual cycle once ovulation has occurred. This allows for the uterine wall to thicken to provide support for the pregnancy. This is called the luteal phase. Once the released egg has been fertilized, the lining of the uterus provides protection for the egg as it begins to develop. After the first few weeks, the placenta takes over, producing the additional hormones and nutrients needed. Some women have naturally lower levels of progesterone. Some studies suggest that low levels during the first few weeks of pregnancy can cause the uterine lining to be inadequate to support the pregnancy, causing the miscarriage. Evidence for this is limited, however. Inadequate levels of progesterone needed to support the early stage of pregnancy are sometimes referred to as a luteal phase defect. Using progesterone vaginal inserts may help prevent early miscarriage, depending on the cause of the miscarriage. The scientific literature supports the use of vaginally applied progesterone, via inserts or suppositories, to help maintain the lining of the uterus to support the pregnancy. While other ways to administer progesterone are available, such as injections, oral dosing, and topical creams, for women with luteal phase defects and recurrent or unexplained miscarriages, this is the recommended method of delivery. ART helps to induce pregnancy by using procedures that remove the eggs from the woman, combine them with sperm in a laboratory setting, then return them to the woman's body, or to another woman's body. There are many methods that help couples to achieve pregnancy. ART is one only one method. Women that participate in ART require supplementation of hormones, like progesterone, to help their bodies create a healthy environment to maintain the pregnancy. Progesterone administered by either intramuscular injection or by vaginal products have been shown to be effective in establishing the initial higher levels of progesterone needed during ART. Injectable progesterone is sometimes used but carries additional risks for complications since progesterone is very rapidly absorbed and is quickly changed into other chemicals. By altering the delivery system of the injection, the active progesterone can remain in its desired chemical form as long as possible. This means altering the liquid, or vehicle, the active drug is placed in, by using oils, such as peanut oil. Do not use this form of progesterone if you are allergic to peanuts. Possible complications from progesterone injections include developing an allergy to the inactive ingredients, abscesses and pain at the site of injection, and unwanted bleeding into the muscle tissue. Vaginal delivery products produce lower systemic levels of progesterone, but higher levels in the endometrium, which is the goal. A product designed to deliver progesterone in this manner, and specifically in the group of women that are using ART, is a progesterone gel product currently marketed under the brand name of Crinone®️. Crinone®️ is available containing either 4% or 8% of progesterone. The 8% product is recommended for use in women participating in ART. Avoid using Crinone®️ in some situations. This product should not be used if you are allergic to any progesterone products, have unusual vaginal bleeding, have ever had liver problems, cancer of the breast or genital organs, or blood clots. If you have had a recent miscarriage, see your doctor first. Get emergency medical help if you have any signs of an allergic reaction. Signs of an allergic reaction include hives, difficulty breathing, and swelling in your face, mouth, or throat. Emergency medical care is also warranted if you experience pain in the calves or chest, sudden headache, numbness or weakness, especially if you notice this to be on only one side of your body, shortness of breath, difficulty breathing, or coughing up blood. Emergency care is also needed for problems with your vision or speaking, feeling dizzy, faint, or problems with balance, changes in vision or speech, chest pain, pain spreading to the arm or shoulder, weakness or numbness in an arm or leg, pain or swelling in the legs, nausea, vomiting, stomach pain, loss of appetite, low grade fever, or changes in your urine.
Summary: Talk with your gynecologist about increasing progesterone. Use progesterone vaginal inserts. Supplement progesterone during assisted reproductive technology, or ART. Use injectable or vaginally administered progesterone. Administer the progesterone by using a vaginal gel product. Seek immediate medical attention if severe side effects develop.

In one sentence, describe what the following article is about: To begin your stroke, your hands should be relaxed and your fingers should be held together. Put your hand into the water fingers first about 15 inches above your head. Your palm should be tilted at a 45 degree angle facing out so your index and middle finger enter the water first. Your wrist should be tilted down and positioned above the fingers, and your elbow will be raised above the wrist. Your hand should make as little splash as possible during entry. Once your hand is in the water, extend your arm another 4 inches Once your hand is in the water, press your hand down and out with your fingers spread out slightly. This is called "getting a feel" for the water or "the catch". If you want to work on your hand technique, you can wear hand paddles to help you concentrate on how your hands are entering and exiting the water. Avoid putting your hand into the water just above your head. It will slow you down and hurt your technique. Do not smack the water with your arms, instead, once your hand enters the water, follow the motion and glide your arm into the water. During the release your arm doesn't move you forward, but it does provide support for the arm which is pulling underwater. It is important to work on your release technique so that your hand entry is clean. To end your stroke, launch your hand forward in line with your shoulder out of the water. Your fingers should hang loosely above the water and your hand should swing wider than your arm. Your arm should be relaxed and should swing wide, too. Concentrate on rotating your arm forward, and do not force a down rotation at the end of the release.
Summary:
Perfect your hand placement and entry. Move your elbow out of the water until it is pointing up for the release.