Usually less urination is a sign of less hydration(?). There are studies that show that some people find it easier to drink the correct amount with a sports drink than with pure water.
reduce soreness the next day
Depending on which Gatorade drink you were using, you may have found some benefit from the carb content that some sports drinks have. There are some theories that easy-to-digest nutrition (which diluted sports drinks can be) help avoid hitting your fat or protein stores. Using fat or protein may cause muscle soreness in some people. I haven't seen any studies investigating this though.
Usually less urination is a sign of less hydration(?). There are studies that show that some people find it easier to drink the correct amount with a sports drink than with pure water.
reduce soreness the next day
Depending on which Gatorade drink you were using, you may have found some benefit from the carb content that some sports drinks have. There are some theories that easy-to-digest nutrition (which diluted sports drinks can be) help avoid hitting your fat or protein stores. Using fat or protein may cause muscle soreness in some people. I haven't seen any studies investigating this though.