I do plenty of cardio by playing sports, and I lately I am lifting weights twice weekly while taking whey in addition to my arms have gotten considerably bigger. I have pretty low unwanted weight and I'm pretty slim. What is the best way for me to buy a six pack? Should I just continue my normal routine and do 30 situps any night or something? Many thanks. From what I can tell… In the event you already have a low unwanted weight percentage than doing situps and crunches will let you. Don't go crazy along. A lot of people head over to the gym and fo hundreds of situps and crunches each day. They treat their abs differently from every other muscle in the body. Treat them the same as you would any other muscle and you may see improvements.