1. Question: How much cardio do I need to do?
Hmmm. How bad do you want to lose weight and how much weight do you have to lose?
Common Sense: The more you do, the more you lose. What a silly question. Each minute you exercise, you are burning calories at an accelerated rate. (compared to sitting on your ass) The longer you exercise and the harder you try THE MORE CALORIES YOU BILL BURN.
How much time do you sit on your ass now? (watching TV, being lazy, relaxing, etc.) Can you image how many calories you would burn if you limited the time you sat on your ass?
Bottom Line: If you are serious about losing weight, you don't ask these kinds of questions - YOU JUST DO IT! The more you move, the more you lose. TRY....