Fitness may be asociated not only with the phisical activity in a spare time but it may be defined as a deliberate influence on phisical, mental and emotional health. Apart from the improvement of circulatory and respiratory system function, fitness has a good impact on bones and joints. Phisical activity is a perfect cure that prevents from muscles weakness, but it has to be practiced responsibly. Otherwise, an athletes may be vulnerable to different injuries – shoulder inflammation, ACL inflammation, back pain or contraction of ischiocrural muscles.
