Lee was getting in a work out because it was just a way to pass the time. Since he hadn't found a way out of here yet he had nothing else to do when Steve wasn't around. Of course that was the other reason he had taken a break from looking for a way home. The last thing he wanted was to leave Steve. For the first time in a while he was happy again.
When Shepard approached him he flashed a smile and a nod of his own. "Hey"