Muscle burns fat as fuel, the problem is, if you are significantly over weight, you should be doing a LOT of cardio to melt some of it off. When you are very heavy, and build a bunch of muscle mass quickly, it builds very bulky muscle. Your body will reconfigure to be bigger, bulkier muscularly speaking, than if you had lost a little weight first. It is also better for your joints to wait for any lifting, etc, until you lose a little.
Water exercise burns almost 3x more calories than exercise on land! A waterfitness class is THE way to go to build muscle, get your cardio, and reduce the impact on joints.
BTW, if you are building significant muscle mass, ignore your scale. muscle weighs more than fat, so your scale may say you have GAINED weight, until the fat comes off. You'll notice the changes when you look in a mirror- for a while, just ignore the scale. Oh, and good luck!
at 10:29 AM on Apr. 29, 2010