Quest 2 owner here, "The thrill of the fight" has been my most amazing related discovery. Just 20 minutes playing before shower and you'll be sweating like there's no tomorrow. First days, if not already in gym, you are gonna feel for sure the aches.

Beat saber is a surprisingly good cardio workout - lots of squatting, moving around etc.

Does sweat not affect the Oculus Quest?

Not a Quest (I've used both and think it's the same answer), but with the HTC Vive the foam pads do a good job of not letting sweat get to your eyes.

In general, the facemasks are pretty tight around the eyes, and the sweat glands are on the forehead, so it doesn't affect operation.

Of course, it still gets gunky and you'll want to regularly clean the facemasks if you do any exercising in VR.

The Quest specifically has the face mask directly integrated to the spacer, so you have to remove the whole thing to clean it, but it's doable.

You can buy little covers to keep the sweat from stinking up the device but yeah sweat is a small issue.

I don't sweat a massive amount from my face when working out, but my baseline level of fitness is relatively good.

They are introducing a new workout pad (the pads are super quick to interchange).

Yes, for sure. Much more fun than going to the gym or doing boring exercises at home. Main use would be cardio and stuff like squats etc, not weight lifting. Although Carmack said (in his FB Connect keynote yesterday) that they will soon be fitness apps that incorporate weights as well.

Carmack said (although he wouldn't recommend it due to safety concerns etc.) that he ties arm weights while playing Beat Saber!

I haven’t used it for that purpose but I follow Alanah Pearce and she swears by it for helping her drop weight after she gained a bunch because of an injury. I’ve heard a few other anecdotes about the app she used helping others too called supernatural. Also the boxing ones too.

Supernatural is a blast - if I had more space in my cramped apartment I'd be playing it daily.

Yes, I recommend it. Beat Saber and Thrill of the Fight are great.

Boxing, Audio Trip, Pistol Whip and even Beat Saber are all nice