Elsewhere in the world, people spend all their energy getting enough to eat. We spend money to get exercise at gyms. This is ironic. It is also what they call a first world problem - the kind of thing that only western modernity could produce.
Road rage, invasive species, substance abuse, this is the bed we've made and we're laying in it. I think it's particularly insidious because there's a frisson of shame that comes along with fighting a battle no caveman could understand. To die in a bar fight is poetry (if only bathroom wall poetry), but to eat oneself to death is pathetic.
Watch out for them. Keep your mind clear. That's all I'm saying.