Conrad Sansone was afflicted with a rare condition,
Defined by the Mayo Clinic:

Costochondritis (kos-toe-KHON-dri-tis) is an inflammation of the cartilage that connects a rib to the breastbone (sternum) — a junction known as the costosternal joint. Pain caused by costochondritis may mimic that of a heart attack or other heart conditions.
Your doctor might refer to costochondritis by other names, including chest wall pain, costosternal syndrome and costosternal chondrodynia. When the pain of costochondritis is accompanied by swelling, it’s referred to as Tietze syndrome.
Most cases of costochondritis have no apparent cause. In these cases, treatment focuses on easing your pain while you wait for costochondritis to improve on its own.
This condition was life-changing to Conrad, who enjoyed a lifestyle (with his family) of sports and resistance training.
The following video shows Conrad explaining his situation, and what he,with the help of Emerge Corrective Exercise, has been able to do.
Matt Pirtle, MA CSCS
Emerge Fitness Training