Watch One Day In My Body

Tiffany has progeria, a condition that causes her to age rapidly — yet she's already outlived her life expectancy. But when doctors discover serious heart complications, she must face a high-risk open-heart surgery. Single dad Ryan was born with Arthrogryposis, leaving his arms and legs fused. Despite limited mobility, he's raising his young son and now preparing to take the next step with his girlfriend.

At just 18 years old, Loren was involved in a catastrophic forklift accident. To save his life, doctors cut him in half. Sofia was an active 29-year-old when her heart went into end-stage failure. Now she must be plugged-in to stay alive.