According to a report published on British Journal of Sports Medicine in 2016, a survey about associations of specific sports and exercises with heart diseases mortality was conducted on 80000 British adults over the age of 30 and it turned out that a specific sport lowered the risk of death due to heart diseases.
Q. What is the exercise lowering the risk of death due to heart diseases most?
(1) Running (2) Swimming (3) Tennis (4) Aerobics
4th is (1) Running: When the risk of death due to heart diseases without any exercises was set to 1, the risk with running was the same.
3rd is (4) Aerobics: The risk was lowered by 36 %.
2nd is (2) Swimming: The risk was lowered by 41 %.
1st is (3) Tennis: The risk was lowered by 56 %.
The reason has not become clear yet, but it is thought that muscle strength to stop and go, and grasp strength to keep swinging a racket prevent heart diseases.
But please be at ease. There is a possibility to keep your heart young without playing tennis.
The ages of hearts of 72 years old ex-pro tennis player who trained and played tennis at present as well and 6 people who lived in an area and didn’t do any exercises were checked.
72 years old ex-pro tennis player: -4 years old
74 years old ordinary male 1: -18 years old
62 years old ordinary male 2: -26 years old
67 years old ordinary male 3: more than his age
73 years old ordinary male 4: -17 years old
71 years old ordinary female 5: -3
? years old ordinary female 6: more than her age
What keeps their hearts young?
People living in the area use ironware because the area is famous for the production of ironware.
So the nutrition that keeps your heart young is iron.
Taking sufficient iron activates mitochondria that creates energy, increasing the function of the heart.
A cup of miso soup with tofu and spinach contains about 0.78 grams of iron, but if it is cooked with ironware, the amount of iron becomes 4.43 mg, which is about 6 times more.
How to check whether or not iron is sufficient
There is 3-5 grams of iron in our body, which is the same as a piece of nail.
If you pull your lower eyelid down, the inside layer should be a vibrant red color. If it is a very pale pink or yellow color, this may indicate that you have iron deficiency.