How's Your Balance?

The goals of this observational study are to investigate the following: * If there is a relationship between prior falls, single leg stance time, and plantar cutaneous sensitivity as measured by monofilaments. * Plantar sensitivity across a broad range of ages. * Self-reported physical function related to balance and mobility using the PROMIS® PROWalk™ questionnaire and balance confidence using the Activities-specific Balance Confidence Scale-6 (ABC-6). Participants will answer questions about themselves and their balance and falls. Their plantar (bottom of their feet) sensation will also be tested using monofilaments. And they will stand on a force plate with their eyes open and closed in dual and single leg stances for up to 30 seconds.