In the 1970s, women began to take part in bodybuilding competitions, which were popular for some time. In order to get a better figure and prevent osteoporosis, women began to strengthen strength exercise as never before. But many women are still afraid that strength training will make their bodies swell, or think that strength is only for men. But strength training actually has many benefits for women, such as increasing bone density to prevent osteoporosis and improving muscle strength and body balance. In recent years, fitness and sports competitions have begun to rise. These competitions don't have strict requirements on muscle development level like bodybuilding competitions, which provide another choice for women. 1980 the first "miss Olympia" competition was more like today's fitness competition, and the winner was Rachel mcleish.