I sympathise, after about 4 months of doing some serious cardio (and midway strength/endurance training), I had done nothing but GAIN weight. However I can't afford a trainers advice, so I've just cut down on the muscle work, and I seem to have balanced out (though still more than before) (if anyone would care to give advice, thanks in advance). And back on topic, I have not tried... I tend to have a fair portion of my workout as rowing, and well, I'm sure you can imagine...