Research has shown strenuous exercise can lead to gastrointestinal (GI) problems, like diarrhea, bloating and abdominal pain, due to inflammation damaging the gut lining cells. This is particularly true in athletes and those who do regular intense exercise, as endurance training diverts oxygen flow from the gut to the muscles, which can disrupt healthy GI function. Probiotics can combat this by reducing inflammation, thereby protecting your gut and allowing you to exercise without suffering from GI problems.