By Sylvester Stallone’s own recollection, the years between 1985 and 1993 saw him in fighting form, with some of his most well-regarded movies in that timespan. Although there is an interesting paradox, as while he was in his worst shape for Cop Land, Sylvester Stallone gave one of his best performances ever. Meanwhile, with his best shape years, Stallone happened to land the movie that still sticks out like a sore thumb on his filmography, Stop, or My Mom Will Shoot.
Article source: https://www.cinemablend.com/news/2495452/sylvester-stallone-reveals-movies-he-was-in-worst-shape-for-and-why-you-can-thank-robert-de-niro