There is a fundamental difference between actually performing bilateral breathing and the ability to perform bilateral breathing in freestyle. Many beginner swimmers get confused with the terms they read on miscellaneous swimming blogs and learn to swim sites. They often read about bilateral breathing and automatically assume that they have to breathe to both sides all the time. By all the time, I mean breathing every 3rd arm stroke, so the rhythm would be: breathe to the right, stroke, stroke, stroke, breathe to the left. Then they are all confused why swimming has suddenly become very hard for them and they are breathless when they reach the end of the swimming pool. Finally, they resort to reading more about bilateral breathing and wondering how come it is not helping their swimming. It actually made their swimming harder. If you fall into this category, read carefully the following advice.