Blood pressure,Yoga.

Blood pressure can be difined as the pressure exerted upon the walls of the vessels when it flows through them .It is the tension in the muscular elastic walls of Arteries.In general normal blood pressure of an adult should not be above 140mm of mercury manometerfor which is called the systyolic pressure which is contraction phase of the heartbeat. The Diastolic pressure which is the resting phae of heartbeat should not be above 90mm. When the systolic pressure is more than normal it is termed as high blood pressure or hypertension. If the systolic pressure is less than normal it is called as low blood pressure or Hypotension.
While measuring blood pressure instrumental error may effect the accuracy. Age and the life style of the suffere affects the blood pressure and allowance should be made for these factors.
To prevent and control High blood pressure moderate and regular yogic exercises are found helpful but inverted postures and asanas which involve benading forward from waist which brings extra blood to the head should be avoided. If the Blood pressure is too high,more than 200mm practicing of all asanas should be stopped however savasana should continued.
Asanas and pranayam recommended in Yoga scriptures for ,
High Blood preasure are,
1.Surya namaskar
2vajrasana
3. makarasana
4. Matsyasana
5.Ardhapadmasana
6.Pavan muktasana
8.Abdominal breathing
9.Anulom vilom Pranayam without retention of breath
10. Practice of savasana several times in a day.

The following also play important role in controlling the High blood pressure.
1. Foods that are too fatty should be avoided.
2. Salts in the diet should be reduced to the minimum.
3. fasting once in a week or fortnight which reduces over weight and subsequently Blood pressure also.
4.Stress, worry, tension, emotional disturbances and out burst, overwork should be avoided.These factors affect autonomic nervous system and aggravate High blood pressure.
5. Change of the environment becomes very helpful in most cases.
6. Laughter and cheerful mood
7. Good sleep
8. walking in fresh air in the morning and evening
9. Avoiding tranquillizers
10.Avoid smoking,excess alcohalism.
Low blood pressure:
The following Asanas and pranayam are helpful in low Blood pressure.
1. surya Namaskar
2.Sarvangasana
3. vipritkarani
4. bhujangasana
5. Pavan muktasana
6. Yog mudra
7.Paschmotanasana
8. Ujjayi pranayam
Parnayam like Anulom - Vilom, Bhastrika are very effectve in controlling the blood pressure.
These Asanas and pranayam should beFirst these Asanas should be learned by some experienced yoga Guru to derive full benifits of Yoga.
Yoga should be started mildy in the begining and time span should be increased gradually.Regular practice of Yogaasans and pranyam are very effective for blood pressure and relives of stress,worry and emotional disturbances also.
There are many books avilable in the market which provides good information about Yoga and its benifits.