How can I describe the position the man is sitting in in the picture?

[![Stock photo from https://previews.123rf.com/images/alanpoulson/alanpoulson1410/alanpoulson141000177/51752085-a-man-in-his-plaid-shirt-leaning-forward-sitting-on-a-blue-chair-.jpg](https://i.stack.imgur.com/hwuGKm.jpg)](https://i.stack.imgur.com/hwuGK.jpg)

Are either of these good:

A man is sitting hunched over on a chair, resting his elbows on his thighs.

A man is sitting leaning forward on a chair, resting his elbows on his thighs.

Is 'forearms' better than 'elbows'? Is 'knees' better than 'thighs'?

In the story I'm writing the man sit like that gazing tiredly out the window (if that changes anything)