Here are three commons reasons why healthy people get a bloated stomach. Consuming too many high-fiber foods can cause bloating. This is because fiber is indigestible and the body is only able to poop out so much of it a day. Another reason why you might be bloated could be because you are swallowing too much air. This is known as aerophagia. Air is full of nitrogen, so when it is swallowed the only way it can escape the body is from burping or farting. Swallowing air can occur when you are talking, drinking water, smoking, chewing gum or gasping for air during exercise. Many people take probiotic supplements to optimize their gut health, however, this could worsen symptoms of bloating. This is because these supplements are full of live bacteria which can aggravate gas, bloating and abdominal pain. If you have been taking probiotic supplements for a while then it may be a good idea to take a break.