https://community.usms.org/swimming/f/general/6678/gulping-too-much-airI have been swimming on a regular baiss for about 4yrs (I am a triathlete). When I swim hard (interval, short tri race=800~1500m), I obviously gulp too much air and cause some distress in my system, and I end up puking either during the bike or run. en-USTelligent Community 12https://community.usms.org/thread/98067?ContentTypeID=1Mon, 21 Jul 2008 10:44:00 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:50a9a106-ac7f-41df-9aa8-bfda2f53b7f6Former MemberIt seems odd that breathing heavy while swimming would cause nausea. I don&#39;t doubt that you are stressing your body, but I don&#39;t think it&#39;s the breathing that is causing the nausea. Are you possibly ingesting some of the water you are swimming in? If you are swimming in a warm lake or an ocean I can understand how you might become a bit nauseated when exerting yourself. &quot;Nausea&quot; is probably not a right word to describing the symptoms. No I am not ingesting water in a pool or lake. I get really gassy (both ends, sorry) after a hard swim (interval or short tri swim, 800~1500m) and feel chest-stomach really tight. If I am not riding or running right after a swim, the symptoms subside in 10-20min. In a short race, I am bending over ride hard (close to LT) for 15-25miles then run 5~10K, I get really sick and force me to stop, bend over and barf. Usually just laud air and liquid. Very unpleasant. A strange thing is my running legs feel very light afterwards. So this makes me thing some lactate buildup associated with too much air in my system. None of this happens unless a swimming is involved. Nothing during running races (up to marathon) or bike TT. I tried different foods, no foods, some foods, drink, etc but nothing helps. I talked to many experienced swimmers and triathletes and some think I am inhaling too much air. If you have any other ideas, suggestions, advice, I would appreciate it very much.<div style="clear:both;"></div>https://community.usms.org/thread/97971?ContentTypeID=1Mon, 21 Jul 2008 09:35:15 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:3cb0f848-e4e3-4acc-a53c-c90ee04c7ecbFormer MemberIt seems odd that breathing heavy while swimming would cause nausea. I don&#39;t doubt that you are stressing your body, but I don&#39;t think it&#39;s the breathing that is causing the nausea. Are you possibly ingesting some of the water you are swimming in? If you are swimming in a warm lake or an ocean I can understand how you might become a bit nauseated when exerting yourself.<div style="clear:both;"></div>