Tonton Streaming Married... with Children (1987) S1E2 - Thinnergy

Marcy gives Peggy the book "Thinnergy", which is a book about health. Very inspired by the book, Peggy goes on a diet and tries to convince the family to join in, but they refuse. When the diet makes Peggy really annoying, Steve convinces Al to join the diet, and persuades Peggy to quit.