Relaxin helps the pelvis spread so the baby can exit the body, but it also affects the ligaments in the feet, causing a stretching of those ligaments.

Chillaxin is a portmanteau of chillin’ and relaxin’, refers to an extreme state of contentedness.

Following a brief introduction of relaxin family members, receptors and related signalling pathways, we review effects of relaxin on cardiovascular system, particularly, its anti-fibrotic action.