We all think about it - 'What will I look like when I'm older'? For those of us in our mid 30's to early 40's, we begin to get a peek into what the man in the mirror is going to look like during the next chapter in our lives. Whether we like what we see in the mirror is up to the individual. Signs of aging eventually take a toll on all of us, and while we can mitigate those signs by taking precautions, some of us are more genetically prone to signs of aging than others. Here we'll break down some of the common signs of aging that men face as they get older, including the reasons why, and steps you can take to prepare and cope both preemptively and reactively. When do most guys hit the wall? Most men will tell you that at some point in your 30's or early 40's you'll look into the mir…