# Filter your source of drinking water.
Our water supplies are contaminated with various chemicals, while chlorine and fluoride are also carcinogens. Distilled or Reverse Osmosis would be ideal. If you can't afford those, a simple ceramic carbon filter is better than nothing.

Preferably, filter your shower water too, as the pores on our skin absorb a lot of the chlorine which is in it.

# Drink more water
Water is critical to good health. Our bodies are over 80% water! Water carries out many functions in the body -- it lubricates, carries nutrients, flushes toxins, cools, etc. Many diseases have been linked to dehydration or lack of water. Sodas, coffee, alcohol etc do not count; in fact, these are harmful beverages which actually dehydrate your body. Freshly squeezed fruit and vegetable juices as well as herbal teas are good. This is perhaps THE most important of this list of good health habits.
# Eat a variety of whole and natural foods
Whole foods have many health benefits. For example, they contain more nutrients and fiber than processed foods. The nutrients in whole foods are also better assimilated by the body. By eating a variety of whole foods, we would thus be getting all the different nutrients which we need; try to have a colorful diet - i.e. fruits, vegetables, beans, etc of different colors. Processed foods, on the other hand, are unnatural and often contain a load of chemical additives and preservatives. Our modern day diets are a disastrous combination of too much processed foods and very little whole foods.

# Eat organic
Commercially farmed vegetables and fruits are often genetically modified or sprayed with chemical pesticides. We are ingesting all these harmful toxins every day, at every meal, and the buildup causes disease in the long run. Eating organic reduces our intake of these poisons. Organic produce also contains more nutrients, which are natural and thus better assimilated by our bodies.