Okay I work out here at home and I dont really have the cash for a Gym membership nor is there a good gym in my very small town to go to. Anyhow I use my bench here and curl bar what Iam wondering is how much Cardio do I need to do in a day? Iam gonna start lifting again 3 days a week. Iam also thinking of going with a protien shake a day to supplment my protien since everything else seems to have SOOOOO much cholesterol in it. Is there anything else I should take with the shakes?? The people at GNC told me I need to take some kind of vitamin to break down the protein. Do I HAVE to have this vitamin?