I’m 78 and I am a 49 + year USMS swimmer. As I grow older I am increasingly feeling colder, but lately it seems to be much worse! When I get in the YMCA competitive pool (79 degrees) I have a lot of trouble staying in the pool for a full workout. This is a 2000 yard swim at a very fast pace with a pulse 133 + or - (although slowing year by year)! I used to warm after 300 to 500 yards into the swim, but now I am still cold at 2000 yards. When I was younger, I was always warm and my wife was cold; now we have changed places. Anyone else having similar experiences?