(f) Work muscles in each part of the body to make the blood circulate to that part, and so increase your strength. Exercise: Walking and special exercises of special muscles.
The blood thrives on simple good food, plenty of exercise, plenty of fresh air, cleanliness of the body both inside and out, and proper rest of body and mind at intervals.
The Japs are particularly strong and healthy. They eat very plain food, chiefly rice and fruit, and not much of it. They drink plenty of water, but no spirits. They take lots of exercise. They make themselves good-tempered. They live in fresh air as much as possible day and night. Their particular exercise is “Ju-Jitsu,” which is more of a game than drill, and is generally played in pairs. By Ju-Jitsu, the muscles and body are developed in a natural way, in the open air as a rule. It requires no apparatus.
The Nose
Always breathe through the nose. Shut your Mouth and Save your Life. Indians for a long time adopted that method with their children to the extent of tying up their jaws at night, to ensure their breathing only through their nose.
Breathing through the nose prevents germs of disease getting from the air into the throat and stomach; it also prevents a growth in the back of the throat called “adenoids,” which are apt to stop the breathing power of the nostrils, and also to cause deafness.
For a Scout nose-breathing is also specially useful.
Indian cradle: the mouth bandage to induce nose breathing
By keeping the mouth shut you prevent yourself from getting thirsty when you are doing hard work. And also at night, if you are in the habit of breathing through the nose, it prevents snoring. Therefore practise keeping your mouth shut and breathing through your nose.