An article in Science Daily says that runners (and by extension, undoubtedly cyclers) are drinking too much water. I summary: experts recommend drinking only when thirsty and accept a temporary loss of a few pounds after running (riding in our case). They found that a third of runners follow a pre-set drinking schedule and a third wrongly believe they need extra salts. The danger is that over-hydration will dilute sodium in the blood to dangerous levels. From the article: "The International Marathon Medical Directors Association recommends that runners drink only when thirsty." After a dehydration episode a few years ago I have been loading up on water -- maybe too much?