Who doesn't rest their wrists on the palm rest of the laptop when they type?

You're not supposed to - but most of us do it. In theory, you're only suppose to rest your wrists downwards when not typing, because doing so takes them out a neutral position. I'm not saying you should change, just trying to discourage the notion that's a healthy habit. (http://www.webmd.com/back-pain/proper-sitting-posture-for-ty...)

The specific model is relevant here as Apple laptops have a much deeper palm rest area than tiger machines.

I rest the bottom of my palms & the edge of my wrist. Maybe you're wearing your watch too loose and its sliding down your arm? My watch generally doesn't touch the top of the MBP 15" surface as i type.

I rest my wrists on my laptop whenever I'm not typing. But I type using 4 of my fingers though, lol.

I rest my wrists on my MBP as well.

I've been typing this way since like '94 and I've yet to have any carpal tunnel issues.

Attempting to type this line with elevated wrists feels very strange and something that I couldn't do for long periods of time.

I rest my wrists on the MPB when I type also, and I've been typing the same way since the late 80's.

I looked at the pix, I looked at the junk on my desk and compared my deskware and wrist vs the pix, and assuming I have a male model physique, that watch is a bit bigger than a sigg water bottle but a cm or so smaller than my large coffee (tea) cup. Its huge.

So... yeah, strap a couple pound weight to your arm, and until you bulk up, there's going to be some sagging by the end of the day.