In one sentence, describe what the following article is about: On a mat, sit with your legs straight out in front of you. Your feet and legs should be close together. Also, make sure your back and neck are straight. Ardha Matsyendrasana, also known as a sitting half-spinal twist, massages the abdominal organs, such as the pancreas, kidneys, liver, stomach, small intestines, and gall bladder. It helps eliminate toxins and stimulates digestion. Then, place the heel of your left foot underneath your right leg and beside your right hip. Also, put your right leg over your left knee. Place your left hand on the right knee and your right hand behind you. While keeping your spine erect, twist your waist, shoulders, and neck to the right. Look over your right shoulder. Hold this position for at least 10 seconds while breathing in and out. While breathing out, release your right hand, i.e., the hand behind you, first. Then, release your waist, chest, and neck in that order. Sit up straight, but relaxed. Repeat steps two through four for the opposite side.
Summary: Sit with your back straight. Bend your left leg. Twist your waist. Release your right hand.

In one sentence, describe what the following article is about: Mail website using your Yahoo! account. If you are trying to reset your password because you aren't able to get into your account, click here. You will need to type it twice to confirm it. Click here for tips on creating a strong yet easy-to-remember password. Your Yahoo! Mail password is the same password for all other Yahoo! products, including Yahoo! Messenger and Yahoo! Finance. If you're using Outlook or another email program to manage your Yahoo! account, you'll need to change the password in your account settings in Outlook. Click here for instructions.
Summary: Log into the Yahoo! Hover over the Gear button and select "Account Info". Click the "Account security" tab on the left. Click "Change password". Enter your new password. Click "Continue" to save your new password. Adjust your mail client settings (if necessary).

In one sentence, describe what the following article is about: No two dandruff shampoos are exactly alike; similarly, no two dandruff sufferers are exactly alike, either. The best dandruff shampoo for one person may not be the best one for you, so be prepared to try out a few different options before finding one that works. Zinc pyrithione shampoos tend to have fewer negative side effects and are generally well tolerated, making them a popular first option. If you have darker hair, tar shampoos and selenium sulfide shampoos are equally good options as long as you follow the label instructions closely. Since salicylic acid shampoos can cause additional dryness, they are generally a less popular choice, but are still safe for most people. Ketoconazole shampoos are generally used when other anti-dandruff shampoo types fail to work or stop working. For a more precise recommendation suited to your hair type and scalp needs, consult a dermatologist. You should always follow the label instructions closely for any dandruff shampoo you use, but generally, you'll need to apply the shampoo to wet hair and thoroughly massage it into the scalp using your fingers. In most cases, you'll need to let the shampoo sit on your scalp for about five minutes before rinsing it out. Others, however, should be rinsed out immediately after application (especially those containing selenium sulfide). To bring severe cases of dandruff under control, you'll typically need to use your anti-dandruff shampoo once every one to two days. The exception is Ketoconazole shampoo, which should be used only twice per week. As your dandruff subsides, you can cut back the amount used to about twice per week, or once per week if you have coarser hair. One shampoo may work for a period of time before suddenly becoming less effective. If this happens, consider switching back and forth between two different ingredient types, using each one at least once per week. You may also consider switching entirely to another type of dandruff shampoo instead of alternating between the old and new ingredients, but doing so may prove less effective than alternating between two.
Summary:
Commit to trial and error. Massage the shampoo into your scalp. Use the shampoo regularly. Swap between two anti-dandruff shampoos, if necessary.