rush?
if you are going from sitting on the couch every night after dinner then the best thing you can do is simply walk around the block a couple of times each night. while it might not seem like a lot of exercise, simply getting out of the couch and walking around the block can do wonders for the first days and even maybe the first week. then, once you can get a good gauge for your fitness levels, increase it by doubling it for the second week, then double it again for the third and so on. just make sure that you stay within your fitness levels.
while you don't have 