Ettinger led his first gym class at the boy's yeshiva high school in 1972, and still works out with his students in order to serve as a personal example of "a healthy soul in a healthy body."
"I have students whose grandfathers were my students!" Ettinger laughs. "I'm going to continue to teach and train with my students for as long as I'm able to - it gives me unbelievable energies."
YBA Nachal Yitzchak was established in 1955 as the fifth residential boy's yeshiva high school in the YBA educational network. In its heyday, the school served over 1,000 students. Today, 485 students attend the school in both residential and non-residential tracks.