My boyfriend is from Buffalo. He said when he first arrived in Southern California he had a really hard time telling how old someone was. In Buffalo you could tell by how fat they were. After a while in So Cal her realized he could tell how old someone was by how bad their skin is.
You should send Mark a Dear Mark because it would be nice to know, but I doubt he knows the answer. Looking at his photos, he obviously (to me) doesn't have that peaches and cream complexion of someone who lives in the north. He's got that good old So Cal leathery look.
Female, 5'3", 49, Starting weight: 163lbs. Current weight: 135 (more or less).
Starting squat: 45lbs. Current squat: 160 x 2