Why do my feet go numb during spin class, and can shoes help?

Foot numbness during indoor cycling is very common and usually caused by one or more of: shoes that are too narrow (especially in the toe box), insufficient arch support causing foot collapse, sole stiffness that's either too stiff (creating pressure points) or too flexible (allowing foot collapse), or cleat position that puts pressure on nerves. Better-fitting shoes with appropriate width, upgraded insoles with arch support, and proper cleat positioning can all help. If numbness persists, try a wider shoe or a shoe with a more anatomical toe box.