As a started to get us all sharing I'd like everyone to come up with examples of ways their life and lifestyle has affected or continues to affect their metabolism.

Simple examples can be your job. All the managers I know eat on the run and have to be ready for action all the time. I've chosen a non managerial role for this reason. No lunch meetings. I find that when I don't sleep well I like healthier foods less. I'm more attracted to comfort foods. So fixing my sleeping issues helps improve the food I eat and balance my energy intake. 

What examples can you think of?