Also keep in mind that the body doesn't like to lose
too much weight
. If you were to
quit your regime, you might gain your weight
back, plus more weight. By the same token, your body will want to put the brakes on when it starts losing too much. In other words, a weight loss plateau is not unusual. Yes, theoretically, changing your exercises every so often should help. I know that Bally's, for instance, offers a metabolism test.