Yes, it is possible to swim 20.7 seconds in 53 meters, but it has yet to be achieved. Transcript: "Yes, I do think 20.7. It is very possible. I just don't think we have figured it out yet. I just don't think we had found a way of doing it just quite yet. But a 19 second, 53 long-course meters? That's going to take a minute."
Yes, it is possible to swim 20.7 seconds in 53 meters, but it has yet to be achieved.
SuperSU taught swimmers how to swim faster by teaching them the proper mechanics of swimming with a super suit, which translates well to a textile suit.
High-level sports can be physically, socially, and mentally unhealthy. You need to be an individualist and almost a workaholic to take it to the highest level. Although it can be tough, the rewards are worth it.
I suggest that you record your best races so you can analyze what parts of the race you can improve on. You don't need to be a certain height or have any specific talent to be successful in the race, as talent is something that everyone has - all you need to do is figure out how to use the body you have to swim the 50 meters as fast as you can.
Work on your underwaters, turns, breakouts and starts.
It is important for young athletes to develop athleticism, and coaches should ensure they are doing so in a proper technique while avoiding sloppy and ugly form.