On the other hand, sitting in a chair all day could be construed as physically insulting. Two counters:
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.