Can't agree with you more because I fall in the demographic affected by sport restriction, but the easiest way to lose body fat quickly is simply to not eat. Exercise/diet have a 30/70% contribution to one's weight loss. Our body is so damn efficient at burning fuel that it is simply faster not to introduce it, so exercise as a fat loss tool alone is not gonna cut it. It is however encouraged for the myriad other reasons it is good to us.