Watch Brittany Runs a Marathon — Clip: "What Happened To You"

Brittany Runs a Marathon — Clip: "What Happened To You"

Hilarious and outgoing, Brittany Forgler, is everybody’s best friend ― except her own. Her partying, underemployment and toxic relationships are catching up with her. She receives a startling wake-up call when a visit to the doctor reveals how unhealthy she is. Motivated to lose weight, but too brok...