Standing 4-feet-10, Marine Maj. Misty Posey wants to change the way Pull-Ups are trained.

Posey wants women to be able to perform Pull-Ups for the Marine Corps biannual physical fitness test. Before 2012, women were only required to perform a flexed arm hang—meaning they hang on a bar for 15 seconds—whereas men are required to do as many Pull-Ups as they can.

In 2o12, the Marines started to require women to accomplish the same feat as men. But in 2013, the rule was reversed because too many women were failing to meet the standards.

Maj. Posey wants to change the rules again, and her Pull-Up training would put both men and women in a good position to pass the test.

“The way you get good at Pull-Ups is to do a lot of Pull-Ups—you don’t have to tear your muscles down, make them sore and make them bigger to get Pull-Ups,” Posey told the Marine Corps Times in February.

Despite the challenges women face performing Pull-Ups—they have 40 percent less upper-body mass than men—Posey stresses the importance of equal training.[instagram src=”https://www.instagram.com/p/BE6rr89Ihs1/”]

“When a man cannot do a Pull-Up, it is because he is weak,” Posey said in her training guide, The Secret to Pull-Up Success: Specificity and Frequent Practice. “When a woman cannot do a Pull-Up it is because she is a woman.”

Though women have a harder time performing Pull-Ups, Posey said her training program has worked with each person she has put through it, male or female.

In her program, Posey emphasizes the importance of frequency. Getting more reps helps a person perform Pull-Ups better.

With Posey striving for training equality in the Marine Corps, her goal is to help everyone do Pull-Ups with ease.

“You can absolutely learn and improve Pull-Ups in a relatively short period of time,” Posey said in a video. “You just need the right tools.”[youtube video=”asMtayTp0J0” /]