to run your best without taking in some carbohydrate.” If you’re running a marathon, you should drink 400-800ml of carbohydrate-electrolyte drink every hour. Find out if the organisers will be providing carbohydrate drinks and, if not, supplement plain

, let alone refill your back-borne water bladder.What's In A Name?What's the difference between hypotonic, isotonic and hypertonic drinks?A hypotonic drink is more dilute than your body fluids (ie there are fewer particles – sugars/electrolytes per 100ml

will sweat a lot indoors. Consider an electrolyte replacement such as Nuun.  

to replace the various things, especially electrolytes, that you lose through sweat, that plain water can't replace. See full threadMake your own sports drinkZorbaTheTaff - Try making your own isotonic energy drink with 50/50 fruit juice/water and a pinch

, including the heat and humidity and lack of fluid and electrolyte replenishment. It is great that Kim can identify these factors and be aware of them in the future.Kim has been one of the most determined runners I have ever worked with, both in terms

dehydrated before you start drinking and eating this can cause more problems.Could you try jelly chews?  Choose ones with electrolytes in, have one every 15 minutes and then just sip on water about every 5K. Don't gulp the water, hence why you should practise

. If the weather was hot and sunny that might have caused it. Obviously you've sorted out food, but for a quick fix, you could try flat coke and salted crisps or electrolyte solutions. CJBA Join the thread For the week ending 7 September

It is possible to over-hydrate which can lead to hyponatraemia. I would suggest you drink less and see what happens. Why do you drink that much water? And are you taking any electrolytes with the water to replace those you’re flushing out?fat buddha Do you drink