Judging by the options, you can tell I am generalizing a bit, and there are only eight options- sorry, in advance.
I like to use an old Extra Credits episode for this one in which it is mentioned that if your player has limited health, a designer can estimate how much health they will have at any given location, and design the challenge accordingly. In addition to that, if a player can find health restoratives in the level itself (Halflife style, for example), in encourages level exploration and adds a decent overtone of tension, especially if you are being fire upon, all the while.
I like to use an old Extra Credits episode for this one in which it is mentioned that if your player has limited health, a designer can estimate how much health they will have at any given location, and design the challenge accordingly. In addition to that, if a player can find health restoratives in the level itself (Halflife style, for example), in encourages level exploration and adds a decent overtone of tension, especially if you are being fire upon, all the while.