It wears him out a lot and he ends up resting after he moves around. But after a few days of having to poke him to make sure he is still alive, it's nice to see him mobile. It's going to take him time to build his muscle strength back up; his muscles had totally wasted away to nothing. So now that I'm pretty confident he's tolerating his food, I'll start working to fatten him up & strengthen him. Plus, today he's going to get some sunshine time.