I'm 19 years old, currently 193 pounds (5'11"). A few months ago I was 225 but with running and dieting I was able to bring my weight down. I'm now looking for other ways to bring my weight down even more. I've been told by some people that doing exercises with multiple reps of lifting low weight free weights would burn off a large amount of calories and inches. Is this true? Is it worth a shot to pick up a few (low weight) free weights and do it?