During which month do people sleep the least?

Samuel was out for a walk when it started to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

Can you write down eight eights so that they add up to one thousand?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

I don't get anymore wetter, no matter how much rain falls on me.

The more you take me, the more you leave me behind.
Who Am I?

What does the following BrainBat signifies?

ABCDEFGHIJKLMNOPQRSTUVWYZ

QQQQQQQQQQQQQQQQQQQQQQQQQ.

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.