Do you mean ODSTs? And by "Body Shields" do you mean "Body Armour"? Or a Energy Shield like the Master Chiefs? If you've played Halo 2, or 3, it should be obvious, no offense.
The health thing is back, so you have stamina, which drains when shot, and once your stamina is dropped, you lose health, find health packs to restore health.
Fair enough , meant the Energy shield .
so you don't have the flashy shield anymore , Nice