Yes. Many boxers make a sound when they punch. But it's not for the purpose of making a sound. Short, hard, fast breaths to oxygenate your body and still be able to hold your core tight. If Oscar had learned to do this, he probably wouldn't have been paralyzed by that B-Hop body shot.

And yes, if you're fast enough, you can make a whooshing sound with your straight punches. I was a pretty good amatuer, but no RJJ, and I can do it. As a matter of fact, I just took my shirt off and did it with my jab. Here. At my office. Why is everyone looking at me funny? lol