1. Period
1.1. first period
1.1.1. most girls this is around age 12. But it can be as early as age 8 or as late as 15.
1.1.2. signs
1.1.2.1. She's worn a bra for a few years.
1.1.2.2. She has hair under her arms and in her private parts.
1.1.2.3. She has some clear, stringy liquid (called discharge) coming from her vagina.
1.2. why?
1.2.1. changes in hormones in the body.
1.2.2. hormones cause the lining of the uterus to build up. This gets the uterus ready for a fertilization. If the woman does not get pregnant, the lining breaks down and bleeds. This same process happens every month.
1.3. deal with period blood.
1.3.1. pad
1.3.1.1. made of cotton and have sticky strips that attach to the underwear.
1.3.2. tampons
1.3.2.1. a cotton plug that a girl puts into her vagina.
1.3.2.2. for playing sports or swimming.
1.3.2.3. Don't leave a tampon in for more than 8 hours because this can increase your risk of a serious infection called toxic shock syndrome.
1.3.3. menstrual cup
1.3.3.1. inserts it into her vagina
1.3.3.2. The cup holds the blood until she empties it.
1.4. Blood Comes Out
1.4.1. Although it may look like a lot of blood, a girl usually only loses a few tablespoons of blood for the whole period.
1.4.2. Periods usually last about 5 days. But a period can be shorter or last longer.
1.4.3. the first few years period may not come regularly.
1.4.4. Most girls need to change their pad, tampon, or menstrual cup about 3–6 times a day.
1.4.5. Women won't have a period while they are pregnant.
1.4.6. menopause
1.4.6.1. stop having periods
1.4.6.2. age 45‒55
1.5. PMS
1.5.1. premenstrual syndrome
1.5.2. when a girl has emotional and physical symptoms right before her period starts or during the early part of her period.
1.6. Cramps
1.6.1. a warm heating pad on the belly and medicines can help.
2. Skin Problems
2.1. Acne
2.1.1. About 8 in 10 preteens and teens have acne, along with many adults.
2.1.2. They include whiteheads, blackheads, red bumps (pimples), and bumps that are filled with pus
2.1.3. acne vulgaris
2.1.3.1. appears on the face, neck, shoulders, upper back, and chest.
2.1.4. Why
2.1.4.1. hormone changes
2.1.4.1.1. hormones stimulate the sebaceous glands to make more sebum, and the glands can become overactive. When there is too much sebum, that oil clogs the pores and leads to acne.
2.1.4.2. herdity
2.1.4.3. Stress
2.1.5. What Can I Do?
2.1.5.1. \wash your face once or twice a day with warm water and a mild soap or cleanser.
2.1.5.2. When you wash your face, take the time to remove all of your makeup.
2.1.5.3. Wash your face after you've been exercising and sweating a lot.
2.1.5.4. Don't scrub your face, using your hands instead of a washcloth.
2.1.5.5. try to keep hair sprays or gels away from your face because they can clog pores.
2.1.5.6. If you have long hair, keep it away from your face and wash it regularly to reduce oil.
2.1.5.7. Avoid hats
2.1.5.8. Try not to touch your face.
2.1.5.9. Don't pick, squeeze, or pop pimples.
2.1.5.10. If you wear makeup, moisturizer, or sunscreen, make sure they are "oil-free," "noncomedogenic," or "nonacnegenic."
2.1.5.11. use benzoyl peroxide or salicylic acid
2.1.5.12. If I Get Pimples Anyway?
2.1.5.12.1. premenstrual acne
2.1.6. sitting out in the sun doesn't helps acne.
3. Brests
3.1. Start Growing
3.1.1. start growing as early as age 8 or as late as 13.
3.1.2. continue to grow during the teen years and even into her early twenties.
3.1.3. Breast size
3.1.3.1. depends on heredity and a girl's weight
3.1.3.1.1. more body fat is more likely to have larger breasts.
3.1.3.1.2. breasts of similar size with mother.
3.1.4. breast budding
3.1.4.1. starts when a girl's ovaries enlarge and estrogen, an important female hormone, begins to circulate in the body.
3.1.4.2. the early stages of breast
3.1.4.3. a small raised bump behind the nipple.
3.2. Bra
3.2.1. protect breast tissue and keep the breasts supported.
3.2.2. Bra Sizes
3.2.2.1. chest size
3.2.2.1.1. represented by a number (32, 34, 36, etc.)
3.2.2.1.2. part of the bra that runs across a girl's chest and around her back.
3.2.2.1.3. measurement
3.2.2.2. cup size
3.2.2.2.1. parts of the bra that hold the breasts
3.2.2.2.2. represented by letter (AA, A, B, C, etc.).
3.2.2.2.3. measurement
3.2.3. Kind of Bra to Buy
3.2.3.1. training bra
3.2.3.1.1. first bra for girls who didn't yet fit into the cups of standard-size bras, but needed basic support and comfort.
3.2.3.1.2. sports bra
3.2.3.2. soft-cup bra
3.2.3.2.1. most natural-looking bra
3.2.3.2.2. underwire
3.2.3.3. Minimizer bras
3.2.3.3.1. girls who want their breasts to appear smaller.
3.2.3.3.2. made of thicker fabric with bigger backs and straps.
3.3. Changing Shape
3.3.1. Breasts are just one sign that a girl is getting older and on her way to becoming a woman.
3.3.2. plenty of women and older girls to ask about breasts or bras
3.3.3. doctor is a good source of information.
4. Body Hair
4.1. Shaving
4.1.1. razor
4.1.1.1. sharp blade that cuts the hair off close to the skin.
4.1.1.2. Your skin might stay smooth for as little as a day or as long as 3 days
4.1.2. Shaving is a low-cost way to remove hair.
4.1.3. Razors are sharp, so you can cut yourself
5. Crushes
5.1. special feelings you have for another person
5.2. You can't choose your crushes. Sometimes they sneak up on you
5.3. Feel
5.3.1. You might feel shy or giddy or maybe even shy and giddy all at once!
5.3.2. You could have mixed feelings. When you see your crush, a part of you might feel embarrassed and you might want to run away and hide. Another part of you might imagine your crush noticing you and sharing the same feelings.
5.3.3. speechless, or tongue-tied.
5.3.4. heartbreak
5.3.4.1. feel sad, disappointed, and rejected.