Et par hurtige rettelser?

Hej.. nogen der vil rette denne oversættelse? Bare lige de værste fejl?

Oversættelse
Ifølge sagkundskaben har omkring halvdelen af den danske
befolkning en ualmindelig dårlig kondition. Vi bevæger os
simpelt for lidt på trods af, at vi ved så meget om vigtigheden af at
holde os i form.
At det står så dårligt til skyldes sikkert, at mange stadig har den
opfattelse, at de skal lide for sundheden. De tager helt fejl:
Overdreven fysisk træning synes at være skadelig for kroppen og
at kunne svække immunsystemet, hvorimod regelmæssig motion
er af stor betydning for sundheden.
Den daglige cykeltur er derfor en glimrende mulighed for at slå
to fluer med et smæk. Ikke alene løser cyklen nogle af det
moderne samfunds transportproblemer, den er samtidig med til at
holde os i form. Det er heller ikke så farligt at cykle, som mange
tror, hvis man bare ser sig godt for, undlader at tage chancer og
følger færdselsreglerne.


According to the experts about half of the Danish population have an exceptionally bad fitness. We simply do not enough although we are so well informed about the importance of being in a good shape. The reason for this bad situation is probably because many people are still of the opinion that they have to suffer for health. They are completely wrong, exaggerated exercises seem to be harmful for the body and could weaken the immune system whereas regular exercises is of great importance to the health. The daily bicycle ride is therefore an excellent opportunity for killing two birds with one stone. Not only does the bicycle solve some of the modern society’s transportation problems, at the same time it helps us to stay in good shape. Nor I bicycling as dangerous as many believe, if you just look where you are going, refrain from taking chances, and follow the traffic regulations.