When a long voice shouts 1, 2, 3, 4, it is always the time when the left foot touches the ground first and the right foot touches the ground later. Let's make an analogy. Usually, when calling 12 1, a number is a syllable, so a number corresponds to a foot, either lifting or landing. Shout for a long time, one number corresponds to two syllables, that is to say, shout for the number of 1, and you have to move your foot twice, first your left foot and then your right foot, which is equivalent to 12 in1,so after shouting for a long time, your left foot will land first, and then your right foot will land. Finally, the instructor should say stop. Note: stop is two syllables. When "Stop" is equivalent to 1, and "Stop" is equivalent to 2. You should shout 1 2 immediately after the instructor stops, and lift your feet at the same time. When calling 2, if you don't move your right foot, the whole person will be in a stop state! Usually you can practice by yourself as I say, or you can call the instructor yourself. I feel very studious. I believe you can learn it well! Finally, I wish you can become a military training model!