A、It becomes better and better. B、It experiences more hard manual labor. C、The strain on it is reduced to a little. D、Modern tec

In today’s modern world, where the modern technology dominates,(19)that the human body gets worse is taking place. Hard manual labor is reducing. The strain on our bodies is in many cases reduced to walking a couple of yards and getting into the car.Through the lack of movement several society deceases, heart deceases, posture defects and obesity are increasing.
    Good physical fitness doesn’t only bring advantages in health related aspects. It increases the possibilities of leading a richer and more active life.
    A person going away for skiing over the weekend may have more fun in the slopes if he or she doesn’t have to take a break after the first run, because he or she has trained the body to endure the strain of skiing through regular fitness training.
    Many injuries, which occur in leisure sports, can be prevented by training and reaching a certain body strength. How many haven’t encountered people complaining of back injuries during a friendly game of softball, tennis or even golf.(21)Sometimes these aches and pains even keep us away from doing our favorite sports totally. Or at least not with the fun and ease it could have been. Through strengthening our muscles, we may avoid many of the injuries caused by every day situations and leisure sports. And we also prevent early going bad of our posture and the following damages.