Menstrual cycle shortest and longest cycle lengths is considered very irregular. The average menstrual cycle lasts 28 days. The variability of menstrual cycle lengths is highest for women under 25 years of age and is lowest, that is, most regular, for ages 25 to 39. Subsequently, the variability increases slightly for women aged 40 to 44. The luteal phase of the menstrual cycle is about the same length in most individuals (mean 14.13 days, standard deviation 1.41 days) whereas the follicular phase tends to show much more variability (log-normally distributed with 95% of individuals having follicular phases between 10.3 and 16.3 days).
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,