Health and HD is just a lovely subject! If you put in the effort and practice answering Qs you can do really well! There is a lot of memorisation and understanding of content (some of which, such as unit 4 concepts, can be dry) but it's not impossible!

You just need to make sure you don't slack off

Even putting a bit of effort into this subject and practicing how to answer Qs can really enable you to do well

It's an amazing subject if you find health/disease/nutrition related stuff and health impacts on the developing word interesting

What do you learn about in Health? I heard that it talks more about the health of other countries, the human development index and all the stuff I touched on a bit in year 9 Geography.
You learn about that stuff in Unit 4 when you look at Global Health and Sustainable Human Development

You also learn about Aid and how Australia helps developing countries in the later parts of unit 4. In Unit 3, you learn more about Australia's Health as a whole as well as the diseases/conditions affecting Australians. You also learn about the role of nutrition and different nutrients in achieving health and how healthy eating is promoted in Australia