Inclusion criteria:  Able to stand without an assistive device  This study requires subjects to stand and to walk with the Delsys monitors, thus we are unable to use subjects who cannot stand without assistive devices. Delsys monitors are a wearable device that allows for comprehensive analysis of gait and balance. The sensors will be attached to the subject and they will be instructed to perform the gait test by walking for 5 minute intervals over the duration of 63 minutes. The Delsys will generate a report automatically that will then be analyzed.  Able to walk in 5-minute intervals over the duration of 63 minutes without assistive devices.  The objective of this study is to measure gait. Assistive devices change gait and limit our ability to measure gait.  • Subjects must be within the age of 18-45  Exclusion criteria:  Impairment or inability to perform physical activity (e.g. walking) independently. Inability to walk for 2 minutes without pain or discomfort.  Neurological conditions (i.e. stroke or Parkinson's disease)  ○ Many neurological conditions can potentially alter gait. Therefore, we are eliminating individuals in this group.  Recent (within 6 months) orthopedic surgery that impacts walking ability and balance, e.g. total joint replacement  ○ The objective of this study is to measure gait and people with lower extremity injuries may have excessive variation in gait. Hence we will be eliminating them from this study.  Wound or absent sensation on plantar surface (bottom) of the subject's feet.  ○ Subjects with this issue will have alterations and variations in gait due to sensory deficits and/or pain. They will not eligible for this study.  Visual Impairment ○ Subjects must be able to read and visually recognize words. Therefore, subjects must have 20/40 (corrected) vision. Subjects who are blind cannot participate.  Day of testing eligibility  Subjects must not have consumed caffeine within the last 12 hours Subjects must have slept >2 hours of their normal reported sleep time .