SHARE SHARE TWEET EMAIL. When you're swimming the front crawl -- also called the freestyle stroke -- it's quite easy to get overwhelmed and start feeling like you're not getting enough oxygen, because your face is in the water the majority of the time.HARE SHARE TWEET EMAIL. When you're swimming the front crawl -- also called the freestyle stroke -- it's quite easy to get overwhelmed and start feeling like you're not getting enough oxygen, because your face is in the water the majority of the time.