Answer:
If a man carried my burden, he would break his back. I am not big but leave silver in my tracks. What am I?
Find me on body builders or in the drink aisle. What am I?
I tremble at each breath of air, and yet can heaviest burdens bear. What am I?
I am one small little piece of paper yet sometimes hold lots of value. I am all you need to get in to big events but will cost you. I am an important part of travel. And if lost you're not coming.
Travel a mile and I will change, travel a million and I will end as I started. What am I?
The answer I give is yes, but what I mean is no. What was the question?