Explanation: "Guts" is the stomach area. Having "guts" is representing you have a strong stomach. When you have "guts" you are saying you are brave or have a lot of courage.
I don't have the guts to go bungee jumping.
He doesn't have the guts to ask her on a date.
He has a lot of guts to be hunting by himself.
A:
I heard you went to Sky Mountain Park. How was it.
B:
It was pretty fun.
A:
Did you go on the monster ride?
B:
No. I didn't have the guts to go on that ride. It was too scary.