Going commando may help if you suffer from digestive issues like acid reflux and have typically worn tight shapewear in the past, the Daily Mail reported. Tight undergarments may cause pressure on the stomach and, as a result, push acid into the esophagus, causing the digestive condition. "If you don't have a reflux problem yet, but have a predisposition to it, then wearing tight garments could tip you over the edge into being a sufferer," said Jonathan Wilson, general surgeon at The London Clinic.
If you stop wearing underwear, it may not just be more comfortable but it could also help improve your blood circulation, especially if you've typically worn tight shapewear like Spanx for a slimmer appearance. "If it's really tight, you could have nerve impingement and decreased circulation," women's health professional Dr. Donnica Moore told Considerable. And since shapewear is generally tougher to pull down, some women may find it a challenge to use the restroom. "So when women wear them, they tend to hold it more than they should," Moore also said. You don't have to worry about that when you're not wearing underwear.
If you do stop wearing underwear every day when you work out, you may increase your risk of micro-cuts, also known as vaginal fissures, as reported by Bustle, and yes, it is as painful as it sounds. These fissures are often caused by the stretching or irritation of the skin, and occur if you're doing "repetitive workouts in improper gear without underwear." So, just like with your day clothes, it's important to wear soft, breathable pants while exercising.
One way to prevent an allergic reaction is to wear latex-free underwear that's usually hypoallergenic, Mainardi said, or skip underwear altogether. Your laundry detergent can also cause an allergic reaction, Considerable reported.