Dolph Lundgren: Good Genes or Good Docs?

1980's action star Dolph Lundgren still packs a lot of muscle.

Here's the 28-year-old "He-Man" back in 1986 (left) -- and 26 years later, the 54-year-old at "The Expendables 2" premiere in London this week (right).

Blondes do have more, er, fun.