See how they run episode takes place in the 1950s because Paul was born in 1942 and Barry was born in 1944. Both born 2 years apart with only each other for siblings. The Patton Brothers Jimmy and Brian were also born 2 years apart and had only each other for siblings. Jimmy was born in 1933 and Brian was born in 1931.
I think it's because his dad told him to have a healthy lifestyle and taught him to say "a healthy body is a happy body". So he didn't give him the fizzy twizzlers.