He's enjoyed good health and kept himself in good shape. Becker has had several hip surgeries and Lendl has let himself go.
In fairness, although he may have aged in the face, he is in amazingly good shape for his age as he keeps himself fit.
We all have weird dreams from time to time. I used to have dreams about trying to find out the results of a Murray match but nobody could tell me and I couldn't access the result on the internet for some reason. ;)