[khadiya]

That's a really interesting question Kina, thank you.

I think I'm going to give a bit of a yes and no answer. I do round my shoulders forward as a default (especially at work and if I'm reading/sewing). However, I'm quite aware that I do this and I often tend to end up pushing my shoulders back (often in an unconscious attempt to 'counteract' the problem). You can imagine how odd this can look.

My pecs could do with improvement but I can isolate them and perform activities/moves that uses them a lot with relative ease.

I would also add that most of my back/neck/shoulder/upper chest muscles are incredibly stiff. The reason I am asking about the Serratus Anterior in particular is that a teacher recently noticed that I can just about 'make contact' with the other muscles but not this one.