https://community.usms.org/swimming/f/general/3628/hot-pools-and-hemoglobinThe amount of O2 released or absorbed by hemoglobin is affected by partial pressure, ph, and temperature. I won&#39;t get into the other two factors since temperature is the one that affects swimmers. The higher the temperature of the body, the greater theen-USTelligent Community 12https://community.usms.org/thread/35470?ContentTypeID=1Sun, 16 Oct 2005 14:35:28 GMT3187ac58-ba85-4314-b79a-c45cd885e09a:94a2f15e-379f-4700-81ea-aa15afadbc08Former MemberBuoyancy. According to some book I&#39;m reading about fish :D (but of course), changes in water temperature slightly affect buoyancy. It says, &quot;the highest density is observed at a temperature of 4 degrees celsius.&quot; That&#39;s about 49.2 degrees fahrenheit. I can&#39;t wait to test this out. Haven&#39;t reached the chapters yet on the metabolics of fish. I&#39;m hoping I&#39;ll have developed gills by then...<div style="clear:both;"></div>