I feel a lot stronger and athletic after my weight loss. It's not perfect, but I do see improvements in my muscles. I'm able to do things I never would be able to do before with the extra weight.
I've been practicing doing chin-ups. I use a weight-assisted machine and eventually I won't need the assistance to do them. Push ups were always difficult for me. I can't do them properly just yet, but I practice daily. Push ups are such a good work out that I want to be able to do them correctly. I do the modified version and gradually, I'm getting closer to doing the traditional push up. It's a good sign of strength and physical fitness to be able to do them.