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Your Body & Your Fitness

We can’t enjoy being overweight, tired and under constant stress
A strong healthy heart and efficient lungs are the foundation of a fit and healthy lifestyle.
The most basic measure of your fitness is the way your heart performs. The heart is a muscular organ whose contraction pumps blood to the whole body and deliver the oxygen.
Defining fitness is more problematic, there are many different kinds of fitness,
A physician may define it as the absence of disease.
An athlete may rate fitness according to the amount of musculature developed.
Other individuals  perceive fitness as  the ability to perform certain sports skills or the body’s strength,stamina,endurance and flexibility, but the most comprehensive definition has been given by the American medical association, which defines physical fitness as the general capacity to adopt and respond favorably to physical effort, in simple words a person who is capable of doing his daily work safely and efficiently without being overly fatigued and still feel better and look good and have energy left at the end of the day.
Physical fitness can be classified in to two categories-
(1)    Health related fitness.
(2)    Motor skill related fitness.
Most of the health experts agree that, from a health point of view, physical fitness involves five basic components that are separate but interrelated.
(1)    Cardio-Vascular endurance.
(2)    Muscular endurance.
(3)    Muscular flexibility.
(4)    Musculoskeletal strength.
(5)    Body composition.
Each component, I will elaborate in coming blogs.
The second category of physical fitness (Motor skill) includes-agility, body balance, coordination, reaction time and speed. Motor skill related aspects of fitness are of greater significance in athletics.
Most importantly, improving all the components of fitness alone would not always decrease the risk for diseases and never ensure better health, as a result a new concept developed –“The concept of WELLNESS”
In details, I will discuss latter.



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CARDIO RESPIRATORY ENDURANCE Cardiovascular or cardio respiratory….confusion OK, I clear your doubt, Cardiovascular refers to the heart, blood and blood vessels and Cardio respiratory includes heart, lungs, blood and blood vessels. In simple words, Cardio means related to the heart, those activities which can’t complete without hearts contribution. The function of the heart is to supply blood to the working muscles (voluntary & involuntary) and vital organs of the body even at the time of rest-----Circulatory system of the body.

Respiratory means related to the lungs, those activities which can’t complete without lungs contribution. The function of the lungs is to mix oxygen into the deoxygenated blood and make it oxygenated blood-----Respiratory system of the body.

Endurance means the ability of the heart, lungs and blood vessels to deliver the adequate amount of oxygen and nutrients to the cell and working muscles during prolonged physical activity without fatigue.

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Generally, the most overlooked factor in physical fitness is Flexibility. Flexibility is not only for muscles belly (thicker middle region of muscle between origin and insertion), and their fascia while this is the cumulative contribution of tendons (attaches muscle to bone), ligaments (attaches bone to bone), joints and skin. Before understanding the subject topic we will have to take a short glimpse of the musculoskeletal system along with muscle physiology. The skeletal system provides structural support and posture to the body and muscular system provides the ability to move. I have already discussed in detail in my previous blog under “Musculoskeletal Strength” here we need to understand the physiology of muscle ( the science of stretching).

Flexibility is the ability to move muscles and joints through a maximum range of motion to use the joint to its fullest. Joint range are divided into – (1)AROM (Active range of motion) (2)PROM(Passive …


There are two types of endurance training. (1)Aerobic Endurance.                       (2)Muscular Endurance.
Aerobic endurance, I have explained in the first component of physical fitness-CARDIO RESPIRATORY ENDURANCE, where we have understood clearly the importance of coordination between the circulatory system and respiratory system. To improve this segment (cardiorespiratory endurance), cross training pattern of exercise is much better than normal routine aerobic exercise on trade mill, upright bike, and recumbent bike etc..

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