Dale Earnhardt Jr. recognizes that the present climate of NASCAR has changed from his driving days, and the perfect way to gauge that is the difference in recovery following a high temperature race. As the summer rages on, NASCAR’s best will be looking for unique ways to remain hydrated during and after races, week-in and week-out. That was evident during June’s trip to Nashville for the Cup Series, and it brought back some memories for the NASCAR Hall of Fame inductee. Earnhardt Jr. was questioned on if he had any tips or tricks to re-hydrating after the checkered flag waved, and his answer f…