Timing when you eat and exercise

So, do you? Think about when you eat vs. when you exercise and vice versa, I mean.

As usual the Simplehuman blog points us toward short, but sweet advice form a reputable source, in this case the Mayo Clinic.

One thing I know from personal experience is true? "Skipping meals entirely may cause low blood sugar, which can make you feel weak and lightheaded. "

Yup, happens to me fairly consistently because I am lame; I neglect to eat breakfast until I've already been up for hours. Or alternatively, I eat a little breakfast and then somehow never fit in lunch until I'm desperate to snack on something in the mid-afternoon.

And I certainly do know better.

How about you...what's your worst habit that you know is bad for you...and you do it anyway?