Yeah, I use them in all Connections and I was surprised when my family ballooned one day. It's hard not to follow the same formula on one when you have a bunch of others going. And the Famitama gives you no weight reading, so you aren't even sure if you're working it down!
That's one of my least favorite things about the v5/Famitama, you're not sure if the weight is normal or more than it should be!