Because of this, we should have a lot more care when choosing your food before and during competitions as, during this time, we push our bodies to the limit and it will be much more sensitive to foods that it doesn’t tolerate well or that we have tried before.  Intestinal problems due to sports are mainly suffered by swimmers and runners, affecting up to 80% of participants (and up to 90% in extreme sports). These are identified as: - Upper digestive tract: burping, acidity, reflux, nausea, stomach pain, stomach saturation, vomiting… - Lower digestive tract: flatulence, intestinal cramps, hyper and hypoperistalsis, diarrhoea, intestinal bleeding, intestinal pain&he...