How Your Body Works

7 sessions, in order

Seven sessions built as one long relay, each system handing off to the next. Food gets broken down into pieces small enough to enter the blood, oxygen crosses in from a breath, and the blood carries both of them everywhere on one continuous double loop. Muscles, which can only pull, move a skeleton that's alive and constantly rebuilding itself. The kidneys quietly filter your entire blood supply forty times a day, while a network of neurons runs the whole operation and can bypass the brain entirely when speed matters more than thought. The finale: one slice of pizza that fires all six systems at once, proving none of them were ever working alone.