I am thinking about working out at home and save some money. I'd like to know if there's anything out there that can help me bulk up some and adding a six pack (my ultimate goal). I see a lot of products on TV that promises this and that and I don't know which one is legit. I don't have a lot of space at home so things like Bow-Flex is out of the question. Also, I want to do sit ups but found that my tail-bone always get in the way and it hurts when I try to go all the way up, any way to alleviate the pain? How good is that "Perfect Push Up" where you have a handle that rotates so you can do easier push ups, and the one that you can mount on the door and helps you do chin ups. Lastly I want to start doing daily jogs. Is getting a good running shoes a must?