[341][342] As governor of New York, he boxed with sparring partners several times each week, a practice he regularly continued as president until being hit so hard in the face he became blind in his left eye (a fact not made public until many years later). As president, he practiced judo for two 2-month periods in 1902 and 1904, not attaining any rank.[343] Roosevelt began to believe in the utility of jiu-jitsu training after training with Yoshitsugu Yamashita. Concerned that the United States would lose its military supremacy to rising powers like Japan, Roosevelt began to advocate for jiu-jitsu training for American soldiers.[344] Feminists annoyed by the posturing of men like Roosevelt, insisted that women were just as capable of learning jiu-jitsu. To prove their point, Martha Blow Wadsworth and Maria Louise ("Hallie") Davis Elkins hired Fude Yamashita, a highly skilled jiu-jitsu instructor and the wife of Yoshitsugu Yamashita, to teach a jiu-jitsu class for women and girls in Washington, DC in 1904. Women had already begun training in boxing in the United States as a means of personal and political empowerment. 