yes what john said is true it is possible as i have also done a feet like that, in my job i need bit of strength so went gym and also dug out a copy of arnold schwarzenegger's body building book(works a treat), train rest and 7 small meals a day, keep the protein in the body as that is the muscle only a small percentage of protein stays in the body the rest comes out i.e in wee and poo, so by having small meals but more of them there is always protein in theb ody build the muscle then tone it to ur needs, i.e if you want mass whats the point in a cardio vascular work out as you are loosin weight instead of puttin it on, but running my personnel opinion is do a days training hard but not 2 hard as to hurt yourself, then have a days rest then train again the next day, eat before you train and eat after you train get the protein and carbs back in the body, my "running" training is running squats, leg curls, toe raises, hell raises the list goes on but it works.
listen to john he will have the knowledge, alot of people in gyms chat b*ll*cks and know not enough which is dangerous, dontget home gym as you will injure yourself and ask around for decent gym dont go to the first one you see or join a running club!