Menstrual Phase: Understanding Your Period
Everything you need to know about the menstrual phase — what happens in your body, how hormones shift, the best foods and exercises, and when to be concerned.
Revisado médicamente por
Dr. Sarah Chen, MD, FACOG — Obstetrics & Gynecology, Stanford Medicine
Última revisión médica: July 10, 2024
Cambios hormonales
Both estrogen and progesterone are at their lowest levels. The uterine lining sheds, which is your period. Prostaglandins trigger uterine contractions that cause cramps. Iron is lost through menstrual blood.
Niveles hormonales durante esta fase
Síntomas
Bleeding (light to heavy), possible cramps, fatigue, lower energy levels. Some women experience headaches, mood changes, and digestive discomfort. The first 1-2 days are typically the heaviest.
Qué esperar
Guía de nutrición
Focus on iron-rich foods (spinach, lentils, red meat, dark chocolate) to replace lost iron. Anti-inflammatory foods like ginger, turmeric, and fatty fish may help with cramps. Omega-3 fatty acids reduce prostaglandin production. Stay well hydrated — warm herbal teas (chamomile, ginger) can soothe cramps. Limit caffeine and salt, which worsen bloating.
Recomendaciones de ejercicio
Light exercise like walking, restorative yoga, or gentle stretching can help relieve cramps by increasing blood flow and releasing endorphins. Swimming is also excellent — warm water eases muscle tension. Listen to your body — rest if you need to. Avoid intense HIIT or heavy lifting on the heaviest days.
Cuidado de la piel
Skin is at its driest and most sensitive during menstruation due to low estrogen. Use gentle, hydrating products. Avoid harsh exfoliants or active ingredients like retinol. Focus on moisture-barrier repair with ceramides and hyaluronic acid. Redness and sensitivity are normal — stick to your simplest routine.
Ánimo y energía
You may feel more introspective, reflective, or low-energy at the start. Some women experience sadness or irritability. Mood gradually improves as hormones begin rising again. This is your body's natural 'winter' — honor the need for quiet and rest.
Consejos de autocuidado
Use a heating pad or warm water bottle for cramps — heat relaxes the uterine muscle and is as effective as ibuprofen in studies. Prioritize rest and sleep. Practice gentle breathing exercises. Journaling and meditation can help process emotions. Be compassionate with yourself — this phase is about recovery and renewal.
Preguntas frecuentes
How long does the menstrual phase last?▼
Is it safe to exercise during your period?▼
What foods help with period cramps?▼
When should I see a doctor about my period?▼
Descubre en qué fase estás con Cyra AI
Nuestra AI aprende los patrones de TU ciclo — no promedios de libro de texto. Sabe exactamente cuándo empieza y termina cada fase.
Política editorial
Cyra proporciona información de salud con fines educativos únicamente. Esta información no constituye consejo médico y no debe reemplazar la consulta con profesionales de salud calificados. Consulte siempre a su médico ante cualquier duda sobre su salud.
Fuentes y referencias
All health claims on this page are supported by peer-reviewed research, clinical guidelines, or authoritative medical sources.
- 1
Reed BG, Carr BR. The Normal Menstrual Cycle and the Control of Ovulation. Endotext. 2018.
View source - 2
Proctor M, Farquhar C. Diagnosis and management of dysmenorrhoea. BMJ. 2006;332(7550):1134-1138.
DOI: 10.1136/bmj.332.7550.1134 - 3
Akin MD, et al. Continuous low-level topical heat in the treatment of dysmenorrhea. Obstet Gynecol. 2001;97(3):343-349.
PubMed