37614 mc04
as fuel or rcscrvc. The moment the muscles go mto actięn the fibres all aet, pouring out their power and reservc into the effort. Whcn the movcment bccomes too protracted a greater contraction of the musclc takes place which strangles filtration, the musclc uses up its reseryc and receiving less supply dian rcąuired bccomes slagnated or tired. This happens morę ąuickly when llie blood has to be pumped up hi 11 as in the legs and in the arms when employed oserhead.
What I3 the Value of Interstitial Fat? In many pcople, particularly the robust, there is found between the muscle tissues a fatty substance termed interstitial, which rncans "in between.” It acts as a lubi icant and nutritive to the muscles. People possessed of this are usually yigorous and powerful.
What Causes Fatigue In the Muscles? As muscles tire they throw off waste tissile which is not immc-diatcly washed away when fatigue takes place. 1 hen the waste substance becomes fatigue toxin wlnch clogs the lifc cells of the muscles.
How Does Muscle Structure Grow? Tlić structure of our muscles has an order ot life similar to plants. The hcalthicr they are the morę fertilc they hecome and brancli out accumulating a greater abundance. From continued etTori the muscle structure wcars out and is carried away. The remarkable fact is that naturę in this operation is not satisfiecl by rcplacement, but multiplics, which is the lortn of hcalthful musclc growth.
Why Are a Man's Muscles Stronger Than a Wom-an's of the Same Sizc? Because he has larger mus-cles which have morę muscle fibres, that are capablc of morę powerful pulls. Tlien the wciglit of a wotnan is distributed dilfcrently and not so well balanced. the weight lying mostly in the hips and tliighs.
What Muscles Has Man Lost by Evolution? Nonę, though many cxist only in a rudimentary condition, hut the nght kind of physical training will balancc tliem.
How Ho We Become Muscle Bound? This is a tiuestion that is vcry much misunderstood. It is not the cause of prominent muscles, but lack of balance. In tliis light a boxer or baseball pitcher would be con-sidered the one most inclincd to be muscle bound. His muscles are dcveloped only in that one direction, and he is rarcly cfficicnt when uiider any otlier test. U11-halanced muscles excrt their power over the weaker ones.
What Happens to Make the Wrist Thicjccr? Mus-cular growth in the forearm. espccially ofthose that lic on the inside, causcs a thickemng of the long liga ments that continue from the muscle to insertion on the wrist. This is where wrist grow-th is produccd. not from bonę growth.
What Is the Best Way to Walk Downstairs When Łeg Muscles Tremble? Backwards. The thigli biceps are rareiy affectcd from exertion as are the quadriceps femoris. When the latter are lired you are apt to lose eontrol of yoursclf and fali down the steps, but by turning around and descending backwards you are a!wavs safc.
What Is the Action of the Liver Upon the Muscles?
One of the main clcmcnts of muscular nutrition is sugar. Ali sugar is controlled by the hvcr wlicre it is convcrtcd into glycogen. When the muscles need morę sugar to carry on with. the liver coiwerts a little of this glycogen into sugar and rclcases it into the blood stream to bc carried to the muscles
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