Yesterday, I went to my aunt's house. She got a Wrist Blood Pressure Monitor at home.
So, I tried to test for my own blood pressure.
This is how it look like, if you don't know what is that:

My result as per below:
Sys/Dia: 93/59
Pulse: 55
Normal rate is :
Sys/Dia: 120/80
Pulse: 60-100
My aunt said, it's very low.
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Since I'm lack of knowledge on this, so I "google" & search for normal blood pressure & pulse rate:
Here it shown:

93/59 - It's not really low, it just the lowest rate from the normal blood pressure only. It call it low normal. It is quite common for Athletes or children. (But, I'm not athletes or children :P )
Means I have to keep my blood pressure up. If drop, then I might become weak & tired easily, will get dizzy or fainting.
How to keep my blood pressure up? Normally, people will take supplementary. But I don't relies on supplement.
The other way will be do more exercise~!! (the cheapest & faster way ^^)
So, I have no excuses to stop any hike already, right? Hmm...
Another 3 weeks, is my 11km marathon. Not sure I can finish it or not, due to no training at all :P