Riddle

I'm light as a feather, yet the strongest man can't hold me for more than 5 minutes. What am I?

Choose an answer

A.A sigh
B.A whisper
C.A heartbeat
D.Breath
Hint: It's a word with 6 letters, starting with "B".

Answer

Breath

Why this is the answer

Your breath weighs essentially nothing, yet holding it in (not breathing) for more than a few minutes is something no one — however strong — can survive.

This riddle is filed under "What Am I?" Riddles and rated Medium.