I use the rule, no play hour before and after eating. When we're out exercising, normally the last 1/4 mile I force us to a slow walk, so they have time to cool down before gettiing a drink as well.
Isen Vom Kavallerie - DDR/Czech GSD (pup in training)
Red - Rescue GSD (CGC)
Gypsy - Yellow Lab (CGC)
At the Bridge....Charlie - GSD (2014) and Shiloh - Lab (2010)