What Do Doctors Do In IGP

1)Does anyone know what doctors do?
2)What is the purpose of having staff morale

To answer your doctor question, 
Doctors reduce the amount of health required  for each traning session. The more stars, the less health it takes! I hope this helps. 

Hi Emmanuel :-)

The role of the Doctor influences how much Health your Driver(s) lose per Training. They are based relative to your level:

5 star rating: -10% Health
4 - 4.5 star rating: -11% Health
3 - 3.5 star rating: -12% Health
2 - 2.5 star rating: -13% Health
0 - 1.5 star rating: -14% Health

Morale has no influence on Staff, but can have a small influence for Drivers.

Hope that helps! ;)