CanCan Body Composition Study

Inclusion Criteria: * Being either male or female * Being an adult \>20 - \<40 or \>70 years of age. * Having a body weight of less than 440 pounds * Being willing to comply with the study procedures * Not having a chronic illness (e.g., diabetes, cancer, etc.) * Must be willing to have biospecimens and imaging stored for research use Exclusion Criteria: * Being pregnant, attempting to become pregnant, or breastfeeding * Having medical implants such as a pacemaker or metal joint replacements * Having had a mastectomy, breast reduction, or breast implants * Having hair that cannot fit in a swim cap * Having a body weight greater than 440 pounds * Taking medications that alter the body's fluid compartments (ex: diuretics) * Not willing to have biospecimens and imaging stored for future research use.