2 hours a day 5 days a week is excessive. You will be losing a lot of muscle with the fat if you maintain that schedule. Losing 2 pounds of fat a week is about all your body can really burn normally. If you're losing more weight than that, it's muscle and water. Keep in mind that more muscle burns more calories, so you want to do what you can to spare your muscle. I'd say an hour of cardio, tops. Especially if you're doing resistance training in the same session.
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Keep your body lean, your blood clean and your mind sharp. -Rollins
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Keep your body lean, your blood clean and your mind sharp. -Rollins
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2 hrs too much exercise a day 
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