Obviously things like your kids and your job can give you a headache . . . because ANY kind of stress can.  But here are a few headache triggers you might NOT know about.

#1.)  Warm Weather.  And not just because of allergies.  One recent study found that for every nine degrees warmer it gets, your chance of having a severe headache increases by 7.5%.

#2.)  Cheese.  It's a major migraine trigger for some people, and the culprit is a compound called tyramine.  The longer a food ages, the more tyramine it has.

--Some of the WORST cheeses for people with migraines are cheddar, parmesan, blue cheese, and Swiss.

#3.)  Cold Cuts.  Processed meats have tyramine too, plus additives like nitrates, which can ALSO cause headaches.  But not usually migraines.

--Most migraines are only felt on one side of your head at a time.  But headaches caused by food additives tend to affect BOTH sides.

#4.)  Strong Smells.  I'm not sure how "surprising" this one is.  But even NICE smells can trigger migraines.  The most common causes are paint, perfume, and certain types of flowers.        

#5.)  Working Out.  Strenuous exercise . . . including sex . . . can cause exertion headaches that can keep coming back for MONTHS.  It's also referred to as a "jogger's headache."

(--CAREFUL.)  And with sex, it's sometimes called an "orgasmic headache" . . . which SOUNDS good, but isn't.  (WebMD)