As planes rise and cabin pressures drop, it's common for gas to spread through our intestines. Gas fluctuations in your body can become painful and cause bloating, so it's important to relieve yourself in the bathroom if you experience this. Interestingly, these gas fluctuations can also impact your ears. You know how you feel the need to "pop" your ears when flying? That's generally due to the air not pressuring properly, due to the aforementioned gas fluctuations.