I think it will be fun!
But my physical strength is not really nice, so it will make me tired!
But also it will be a fun experience to me!

“God loved the world so much that he gave his only-begotten Son.​“ —John 3:16
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I think it will be fun!
But my physical strength is not really good, so it will make me tired!
But also, it will be a fun experience for me!
= In English, "nice" is not usually used to describe physical strength.

= "experience for me" means something that I personally will experience.
= This is great!