Im 15, 5 ft 8 and weigh 135 pounds. i do about 40 crunches a day and 40 push ups. Iv been doing these for about 6 to 7 months now and They dont show. I use to have a 6 pack 3 years ago until i got pretty fucking lazy. I want them back but there not showing. Any ideas? i got a small work out space and thats it :/. Any workout ideas would be appretiated.