MISSING OUT OR FEELING CHEATED: THE HEART (GENERAL INFORMATION)
At thirty a healthy heart will pump about 3.4 litres of blood a minute and during exercise the beat will rise from seventy a minute to about 180 to 200.
At forty the same heart will pump about 3.25 litres a minute and during exercise the beat will rise only to 160 to 180 beats a minute.
By the time he is sixty both these figures will have further declined. The heart will pump only 2.75 litres and when there is exertion or exercise the beat will be in the region of 140 to 150 beats a minute.
To arrest this steady decline exercise is invaluable, swimming in particular. However for anyone out of condition whose idea of sport has until now been confined to watching it on television, you must take care before embarking on a strenuous fitness regime. Start gently, do not over-tax the body initially. If during or after a workout you feel dizzy see a doctor for a check-up. It is also advisable to stop smoking. A smoker is twice as likely to suffer a heart attack in his forties as a non-smoker.
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