Favorite Drink

In my recent save my Sim's favorite is a root beer float. I don't know if this drink has calories or not but he put on weight and he's an active sim. He was busy with the garden, work stuff and helping kids with homework. He got tense from not working out for a few days. So now I let him workout everyday. He still makes root beer floats but I try to stop him from drinking them. I should sell the bar but I have been making his gaming teen drink them. Just a little test. I want to see if she puts on weight or not.