Judging from your tone, you learned it from the coach in the swimming pool. I don't know how much you have learned. If you take off the floating board and abdominal belt, the coach has led you to do a lot of exercises before, so don't be afraid at all. If both the floating board and the abdominal belt are removed, practice with the abdominal belt before removing the floating board. When you take off the floating board and abdominal belt, think carefully about the essentials that the coach said, coordinate your body and change your breathing. Actually, Mei has nothing to be afraid of. As long as you hold your breath in the water, even if you do nothing, your body will automatically float. I just finished learning swimming last year, and I had your heart when I learned it. In fact, there is really nothing to be afraid of. If it really doesn't work, take a deep breath before it works. As long as you overcome your own psychology, you will certainly learn.