According to Dr Dharma Singh Khalsa, president and medical director of the Alzheimer's Prevention Foundation International, Tucson, Arizona. Dr Dharma Singh Khalsa is also author of Brain Longevity (1997), Meditation as Medicine (2002), and Food as Medicine (2004), "your brain needs three different kinds of exercise to thrive best". These are mental exercise, aerobic physical exercise, and mind/

AgingAging is a natural process as we grow older once we are past a certain age. It is a kind of accepted resignation that one's reaction time may slow with age, memories of recent events may not be as sharp (while surprisingly memories of thing long past may stay vivid in the mind), they may be physical degeneration and medical problems like high blood pressure, heart (cardiovascular) diseases,