https://community.usms.org/swimming/f/general/5981/freestyle-breathingWhat can I do with a swimmer that has a very large buildup of carbon dioxide when he starts his practice. He stops about every 50 to expel it. He has good exhalation with his stroke. Towards the end of his practice, this does not seem to be a problemen-USTelligent Community 12https://community.usms.org/thread/80981?ContentTypeID=1Tue, 08 Jan 2008 09:53:15 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:00c7dca8-4234-4d92-9275-b8a8bd7de603Former Memberinteresting, i have a problem with burping too--i really need to but i can&#39;t while i&#39;m swimming. i can&#39;t even if i stop briefly, i think it has to wait until i am done.<div style="clear:both;"></div>https://community.usms.org/thread/81070?ContentTypeID=1Tue, 08 Jan 2008 06:34:48 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:b83dacf6-d465-4e76-b67f-11d17df6a114rtoddTell him not to eat 2 hours before swimming.<div style="clear:both;"></div>