1. No Breakfast

People who do not take breakfast are going to have a lower blood sugar level. This leads to an insufficient supply of nutrients to the brain causing brain degeneration. (You should eat breakfast like a King, lunch like an ordinary man and dinner like a poor man).

2.Over-eating
It causes hardening of the brain arteries, leading to a decrease in mental power. (You can even choose to have small qty every 2 hours instead of full 3 meals)

3. Smoking
It causes multiple brain shrinkage and may lead to disease.

4. High Sugar Consumption
Too much sugar will interrupt the absorption of proteins and nutrients causing malnutrition and may interfere with brain development.

5. Air Pollution
The brain is the largest oxygen consumer in our body. Inhaling polluted air decreases the supply of oxygen to the brain, bringing about a decrease in brain efficiency. 

6. Sleep Deprivation
Sleep allows our brain to rest. Long term deprivation from sleep will accelerate the death of brain cells.

7. Head covered while sleeping
Sleeping with the head covered increases the concentration of carbon dioxide and decreases concentration of oxygen that may lead to brain damaging effects.

8. Working your brain during illness
Working hard or studying with sickness may lead to a decrease in effectiveness of the brain as well as damage the brain.

9. Lacking in stimulating thoughts -very important.
Thinking is the best way to train our brain, lacking in brain stimulation thoughts may cause brain shrinkage. (To increase your creative thinking read poetry, do painting, learn sculpture, read epics)

10. Talking Rarely
Intellectual conversations will promote the efficiency of the brain.

Received via email from M.S Peer Mohammed