Hygiene

Conditions or practices conducive to good health. (Merriam - Webster)

• Includes lifestyle choices such sleeping habits, smoking, drugs or alcohol
• Includes medical, oral and personal cleanliness practices
• Includes Environment such as clean air and clean water.

Cleansing our body of dirt and germs prevents disease and illnesses.

• Washing hands often reduces the risk of contracting or spreading cold and flu viruses. 
• Brushing Teeth reduces the risk of oral diseases can permanently damage teeth and impact quality of life. 
• Exposing ourselves to toxins, whether it be as a smoker, second hand smoke or drugs and alcohol, increases our risk of avoidable diseases.

The public library of science (PLOS) has a wealth of information on personal and environmental hygiene @ http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0081460