Question: What's makes you vomit?

LauraAnne Furlong answered on 12 Nov 2016:

There’s lots of reasons you might be sick, like food poisoning or being ill, but if you are sick after exercising it is probably because during exercise, there is much less blood sent towards the stomach, there is less oxygen available to it, and so this can leave you feeling ill. If you eat too much food before exercising, your body will be very uncomfortable and so making you feel ill and vomiting is one way of getting rid of it. You might also vomit after the session because you are dehydrated from not drinking enough during the exercise session, you have a problem with acid reflux (where the acid in your tummy comes back up towards your neck), you are suffering from heat exhaustion (which also leads to dehydration), or you have low blood sugar when you are exercising. To avoid this, you should eat a proper meal 2-3 hours before exercise (which will maintain blood sugar) and keep sipping (not gulping) water or a sports drink (dependent on how long you are exercising for) throughout the training session.