As far as I can tell, typical snowboarding gear consists of a thick jacket, long trousers (or somesuch), with goggles and a snow hat. To produce Vitamin D the light has to actually come in contact with the skin.
- sport climbing - you wouldn't believe how cool and stimulating the sport is, switch indoor/boulder when weather is bad. cool people in community too
- mix of backcountry skiing in winter and hiking anytime else will give you huge amounts of nature that is very relaxing on the mind (easy rule - the more mind works daily, the more body workout it needs to relax, and vice versa)
As tech workers, I think I would even beyond sitting in a chair all day being physically insulting, to say that it's perhaps one of the greatest (and really a non-trivial one) occupational hazards we face.
1) There's no reason exercise by nature has to be boring or free of intellect. Physics greatly applies to freestyle snowboarding, for instance, and the adrenaline is top-shelf. Not to mention the scenery and vitamin D! Gymnastic and weightlifting activities in general encourage a practical understanding of leverage, torque, moment arms, etc.
2) Even without choosing exciting sports and applying your scientific knowledge to them, why not walk on a treadmill while you work, or sit on a recumbent bike as you watch that 3rd convolutional neural net video? It's an easy way to up your circulation while taking in knowledge and alleviates boredom.