exercises...?

i workout my whole body and eat well but there are some parts that arent being affected and i dont know how to improve them....other than running....what things can i do to tighten my back [like the back of my ribs area], lower abs and inner thighs....i do go to the gym, but im running out of money, so things i could do at home would be helpful

lipo isnt an option

THANKS!