I find that my power-gaming players always want to take a 5 minute rest after an encounter so they are fully healed and encounter powers restored before they move on. I try to only let them do it every-other encouter or so by having patrols or wandering monsters interrupt their break. Having all their encounter powers for each battle makes them a little too powerful in my mind. Plus, battles are loud and have a good chance to attract company. I think they've taken the hint and don't try to rest unless they really need it or if the area is obviously cleared out.
Is this too harsh? Do other DMs let them rest after every battle?
Is this too harsh? Do other DMs let them rest after every battle?