Health documentary series with anatomist Dr Alice Roberts. In this episode, she puts three rugby players through their paces to find out how their kidneys cope under stress.

Health documentary series with anatomist Dr Alice Roberts. Shock tactics are deployed to make one confirmed smoker realise just how much she's damaging her lungs.

Health documentary series with anatomist Dr Alice Roberts. This week she tests a heart under stress.

Health documentary series with anatomist Dr Alice Roberts. She checks out the pros and cons of laser eye surgery and gets a first-hand account of living with vision impairment.

Health documentary series with anatomist Alice Roberts. The body's biggest organ is under scrutiny - the skin. Alice finds out just what happens when skin cancer needs surgery.

Health documentary series with anatomist Dr Alice Roberts. In this final episode, she looks at the most complex organ - the brain.