I always get chills after a tough run. Sometimes I feel sick to my stomache for hours afterwards. However, it always goes away.

Chills that long after a run sound more like an electrolyte problem, not just a hydration issue.

You can get dehydrated but feel not too too bad right after your run, then have electrolyte problems later in the day if you replace only the water lost and not the salt you lost from sweating. So, make sure you drink something that has electrolytes in it, and/or have something salty in addition to drinking water.

One way to get an idea if salt is the problem is to add 1/2 teaspoon of salt to a quart of water and sip that. If you need salt, the mixture likely won't taste salty at all. When it does start tasting too salty , you've had enough.

I've had problems with chills, nausea, and headache developing after a run and a little salt water fixes it. Better yet, drink something with electrolytes while you are running to avoid the problem.

Edited to second Ted's idea of weighing yourself before and after to make sure you don't overhydrate or underhydrate.


http://This message has been edited by maryt (edited Aug-27-2007).

Check the Propel label. I don't drink it myself, but I think it has very little in the way of electrolytes. I checked out their website and it has only 46 mg sodium compared to Gatorade's 200mg for the Gatorade Endurance formula.