Mindfulness of Your Breath & Body.

"Your body always knows what time it is, even if you don't. But there is a different kind of clock inside your body, one that rules all of its cells and systems. 

To understand how it works, you have to step inside the brain and into the hypothalamus. The hypothalamus sits at the center of the brain and is responsible for regulating all of the body's systems. It activates the fight-or-flight response when you feel stress or danger. It tells you when you are hungry or thirsty.

The hypothalmus also regulates all kinds of things that you don't conciously control, including your body temperature, hormone balance, and metabolism. All these changes happen at predictable times of day. 

'Change your Schedule, Change your Life' By Dr Suhas Kshirsagar

Meditation is an important therapy for psychological and nervous disorders, from simple insomnia to severe emotional disturbances. It is useful in chronic and debilitating diseases like allergies or arthritis, in which stress hypersensitivity of the nervous system are involved.

 Western research has found meditation to be very helpful in treating heart disease. The heart is the seat of consciousness in Vedic thought. This is not simply the physical heart but our inner core of feeling and knowing beyond sensory mind.

 Disturbances in our consciousness are reflected in problems with the heart, including on a physical level. Calming the mind and stregthening the heart go together. 

However, all forms of meditation are not good for every one, anymore than all foods or herbs are. 

For this reason Ayurveda recommends the proper lifestyle and an integral approach to meditation that considers both our different faculties and the nature of the individual. 

Book "Yoga & Ayurveda " By Dr David Frawley