Answer:
I transfer oxygen from the atmosphere to your blood
I'm light as a feather yet the strongest person can't hold me for more than a few minutes. What am I?
My first half means container. Not a lot of people understand my language.
I have more shoes than anybody, but less feet than everyone. I am met in the morning, but departed in the night. I may shake as if I'm angry, but I won't bite. What am I?
I am created through suffering, inspiration, joy, and even despair. Born as an idea, and then presented to the human eye. Unlike living things, I never die. What am I?
No matter how little or how much you use me, you change me every month.