The knee belongs to the ___ which assits with movement

Difference between normal and abnormal tissue is much clearer on mri than on ct and mri much suitable to view soft tissues

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)