Menstrual cycle The first period usually begins between twelve and fifteen years of age, a point in time known as menarche. They may occasionally start as early as eight, and this onset may still be normal. The average age of the first period is generally later in the developing world and earlier in developed world. The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women and 21 to 35 days in adults (an average of 28 days). Menstruation stops occurring after menopause which usually occurs
Hitting for the cycle to hit for the cycle in two days. Conversely, the longest period of time between two players hitting for the cycle was 5 years, 11 months, and 30 days, a drought lasting from Michihiro Ogasawara cycle in 2008 to Rainel Rosario in 2014. The natural cycle has been accomplished five times in NPB history. Fumio Fujimura's second cycle on May 25, 1950, was the first time a player collected the hits in order. On average, the natural cycle occurs approximately every 13 years. Other than Fujimura, the four players to hit for the natural cycle are Kazuhiko Kondo in 1961,