Puberty starts between ages 8 and 13, with average age of 10. Process lasts approximately 5 years on average. Hormonal changes occur in hypothalamus, triggering body growth
Middle age spans from 40 to 65 years. Exact definition varies among public. Erikson's seventh stage focuses on generativity versus stagnation
Pregnancy is described as both beautiful and exhausting. Extreme exhaustion is a permanent side effect. Pregnancy hormones make it difficult to sleep. Pregnancy brain affects memory and perception
Breast soreness and tenderness can start as early as 1-2 weeks after conception. Veiny breasts and darkened nipples are common due to increased blood flow. Morning sickness affects 9 in 10 pregnant women, lasting until 12 weeks. Spotting or implantation bleeding occurs in 20% of pregnancies. Stomach cramps and bloating are common due to ligament stretching
Puberty is a natural process of physical and emotional maturation. Average age to start is 10-14 for girls and 12-16 for boys. Hormonal changes trigger physical and emotional development
Death occurs when vital functions including heartbeat and breathing stop. Brain activity may continue for up to 10 minutes after death. Five criteria used to determine death: no pulse, breathing, reflexes, light response, heart sounds