It is always advocated to have an approach towards physical fitness in a scientific manner. The only way to increase one’s physical fitness level is through stress adaptation. ‘Stress’ is not to be confused with ‘strain’. In physical training we stress our muscles (including internal cardio respiratory muscles) over a period of time in a control manner. If muscles are exposed to this type of positive stress in a prescribed manner over a period of time, the muscles retain a portion of this additional strength and the fitness level begins to improve. This improvement is also called the training efficiency. An exercise with out efficiency will be wastage of time…

Physical fitness is the ability of the human body to function with vigour and alertness, without undue fatigue, and with ample energy to engage in leisure activities, and to meet physical stresses. Muscular strength and endurance and general alertness are the clear signs of physical fitness. It is usually measured typically, by periodic tests measuring strength, endurance, agility, coordination, and flexibility. If individuals are able to accommodate to the stresses, they are assumed to be fit. The level of physical fitness can be influenced by regular, organized exercises. Moderate activity will maintain the individual at a level that is usually adequate to handle ordinary stress.

Exercises that demand total body involvement…