Posted by: PP | 2009/03/14


Hi My son 37 is training for a marathon but every time he runs more than 25k' s he starts wanting to vomit. He ran 25 3 weeks ago and vomited. After a 32k he vomited again, today he did 23 and wanted to vomit but didn' t. He is a strong runner averaging 6mins per k. His recovery rate is fast except for the nausea. Any ideas of what the prob might be. He has been in training since Aug 08 so hasn' t rushed his distance. He runs the marathon end of Apri in UK so doesnt want to come unstuck now. Thks.

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Our expert says:
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He might be drinking too much on the run? That happens to quite a lot of people. Or else it might be the nature of what he is drinking - perhaps he is drinking coke or something sweet and it's affecting his stomach. You must remember that during exercise, your body sends the blood to the muscles, not the stomach, so foods and drinks that you normally can handle are suddenly too sweet or rich and can cause this problem.

That's one option. The second is a form of motion sickness, which can be treated using the same tablets they give people who get sea-sick. He might try that out as a second option.

The first is to play around with the diet, both before and during his runs. Maybe it's the quantity he drinks, maybe it's the type of liquid, or even the food he eats before he runs. Difficult to answer, other than to suggest these options, which I hope help.

Good luck

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