Heat can be just as effective at beating your cramps as pain medication. Heat helps relax your contracting muscles. You can apply heat to your abdomen directly or submerge your body in a bath. The key is to bring heat to your abdomen and torso. Consider the following methods:  Soak in a hot bath. Put two to four cups of Epsom salt in your bath. This can help decrease pain.  Place a heating pad on your abdomen. Use a hot water bottle. Be sure to put a covering on the bottle before placing it directly on your skin. Purchase a heat patch for your abdomen. Some companies like ThermaCare sell special heat patches that stick to your abdomen. You can wear these products at school or work under your clothing for up to eight hours of comfort.  Fill a clean sock with rice or beans. You can also add a few drops of an essential oil, such as lavender or peppermint. Sew or tie the open end shut. Microwave the sock for 30 seconds at a time and use as a compress. Vitamin E, vitamin B-1 (thiamine), vitamin B-6, and magnesium can reduce menstrual cramps greatly. Check to see what the vitamin contents are in the foods you buy. Read the labels. If you are not getting enough of these vitamins, buy healthier foods like salmon. Also, consider taking a daily supplement. Speak with your doctor before taking any new dietary supplements.  Vitamin E: The recommended daily allowance (RDA) for adult women is 15mg (22.4 IU) daily.  Vitamin B-1: The RDA for adult women is 1mg (14-18 years) or 1.1mg (19+ years) daily.  Vitamin B-6: The RDA for adult women is 1.2mg (14-18 years) or 1.3 mg (19-50 years) daily.  Magnesium: The RDA for adult women is 360mg (14-18 years), 310mg (19-30 years), or 320mg (31-50 years) daily. You can get these heart-healthy fatty acids via supplement, or eat foods high in them. Fish, leafy green vegetables, nuts, flaxseeds, and vegetable oils such as canola oil are good sources of omega-3 fatty acids. The National Institutes of Health recommends acupuncture for treating menstrual pain. Acupuncturists treat patients...

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Write a summary of the previous text in Vietnamese:
Dùng nhiệt. Bổ sung vitamin. Tiêu thụ axit béo omega-3. Châm cứu.