I'm a bit overweight (right now) so it can be difficult to see any toning. This morning I was sitting and having my coffee and stretching my feet and calves by flexing my foot up and down. I flexed my foot up and saw a dent in front of my lower leg I'd never seen before. S i looked it up. Apparently my "anterior tibialis" is getting stronger and more toned.
I'm just sitting here flexing my foot looking at proof of my hard work. It's small but I'm really excited about it!