The 16 exercise prompts focus on agility, balance, coordination and strength.
For those who are missing limbs, 3D printing can make new prosthetics faster, cheaper, and better.
"It sometimes feels like my foot is still attached to my leg, but in a completely different place."
Thanks to biomechanic artist Jean-Louis Gonzal, JC Sheitan Tenet has been tattooing for the last eight years.
For men who have had a penis amputation, "ghost dick" is surprisingly common.
We also sit down with activist Leon Ford Jr., a man fighting for reform after being shot and paralyzed by Pittsburgh police.
A team of doctors at Johns Hopkins University has been given permission to perform 60 penis transplants on men who were injured in combat.
"You don't have to think about walking with this leg."