I recently scarfed an entire large size package of fig bars and went out for a 2+ mile jog right after.  That's like 2800 calories (each row of fig bars is 700 calories and there are 4 rows in a package) eaten vs maybe 200 calories burned by jogging.  It's definitely not something I'd advise doing every morning.  Don't worry.  I ate nothing for the rest of the day.  I couldn't even if I wanted to.  I felt awful.  Anyway, assuming each doughnut is 300 calories, that would be 3600.  So I was short by 800 calories, or close to one more row of fig bars.    During the jog, I was okay, but my stomach was bloated and I was having some pretty acidic belches.  Point is, if you're in shape and well hydrated, I'd say it's definitely do-able.  You might have some serious reflux, but you'll live.  If you're in shape.