[ Data has discovered that, even though he doesn't need to eat, there are still rations allotted to him. The obvious choice he's made is to collect his rations regardless, and then share them with those who do need them. So you may find him claiming his rations, but he won't be eating anything as long as they're here. ]
[ exercise ]
[ There is no purpose to Data exercising, nor is there any hardship. So while he has no real reason to participate in exercise, he also has no reason to refuse - and while the electric prods are not likely to interfere with his functions in any way, the fact that he's already been altered in some still-unknown way makes him none too eager to become subject to them. ]
[ work ]
[ Despite the limitations placed on his strength - or, in fact, specifically to have an opportunity to more accurately gauge them - Data is spending his work time breaking bricks. While he's certainly noting a good deal more difficulty with the restrictions his servomechanisms seem to be subject to, there is still enough strength for him to complete the task easily. Perhaps it's fortunate that the weight of his endoskeletal structure is enough to make up for the lesser force he can currently exert. While he's perfectly alert and attentive, anyone who knows him or even just happens to observe him closely is likely to pick up on the fact that his mind is equally occupied. ]