I really like hiking or bushwalking as it is called in Australia.
Oh I heard something about that!  I have a few buddies from Australia.  Better be careful.  Lots of dangerous creepy-crawlies in Australia
Yeah the term started in 1927 when the the Sydney Bush Walkers club started using it. 
Do you know why they call the wilderness in Australia "the bush?"  It doesn't seem like there's that much foliage in pictures I see.
I think its because of all of the bushes that you can see.
So do they have any special precautions for bushwalking?  Like having emergency supplies on hand or some kind of emergency radio for when a cellphone won't work?
Yeah you need to be safe  but bushwalking and hiking in general can have all sorts of health benifits. 
I can imagine it can be great cardio exercise.  Get a great tan too.  A natural tan!