When most people scope out a new gym, they tend to focus on the quality of the equipment, range of class offerings, and amenities in the locker room. Alison Feller, however, wants to know about the bathrooms. “I go to Orangetheory because they have three,” she says. Feller has Crohn’s disease, so knowing that there are plenty of restrooms nearby is pretty important. During a flare, patients often have frequent diarrhea, rectal bleeding, and fever. Pain, fatigue, and weight loss are common, too, according to the National Institutes of Health (NIH) and the Mayo Clinic. Although every patient is different,...