Answer:
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
I can be sweet or sour. I do not rhyme with any other word
Turns me on my backs and open up my stomach. You will be the wisest of men though at start a lummox.
I go up and never come down no matter how hard you wish. As I get higher, more wrinkles crawl on to the face. What am I?
I give people a huge fright, but at the end I'm sweet. I normally celebrate at night, when there's less heat. What am I?
I have feet on my head