Instructors Trey Angwin (left) and his grandfather, John Ingram, lead an online karate class while Sensei Jennifer Davenport works on the technical aspects of providing the virtual class. [ Ingram's ...

Martial arts studios, gyms, dojos, academies—whatever you want to call them—have suffered like most other in-person businesses during the pandemic. Many gyms have shut down entirely, while others ...