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So uhhhh was this a good idea? I saw one of the athletes projectile vomited just after he crossed the finish line which doesn’t seem good imo
Vomitting immediately after pushing your body to its limit is fairly normal.
Someone correct me if I'm wrong, I believe the reason is because your body redirects blood/energy to the most important parts when your body is under strain.
So, if there's too much food in your stomache and you're pushing your body to its absolute limit, the stomache becomes less important as to whether it needs to continue working well. Blood is directed away from the stomache and you will vomit.
This is, at least, what happens when someone goes through shock, I'm assuming something similar is at play when pushing your body to its limit.
If swimmers end up sick or contracting some diseases, that's when we should worry. But we won't see those effects as immediately as the end of a race.
You are partly right.
In short: The muscles use ATP to make energy, that reaction takes oxygen. When you're not able to provide enough oxygen for the amount of atp that you want to convert into enrgy your body starts producing lactic acid which ends up in your stomac and you puke.
This is the same thing that happens when you run so much or so fast that you vomit. It means that you are pushing your muscles harder than your lungs can keep up with.
For a full accurate read check out this https://strengthmatters.com/anaerobic-lactic-energy-system/
Mitochondria are the powerhouse of the cell.