Answer:
In all the world none can compare I am a tiny weaver my deadly cloth so silky and fair.
I help boats park
I make you weak at the worst of all times. I keep you safe, I keep you fine. I make your hands sweat and your heart grow cold. I visit the weak, but seldom the bold. What am I?
The warmer I am the fresher I am.
I fly to any foreign parts assisted by my spreading wings. My body holds an hundred hearts Nay I will tell you stranger things when I am not in haste I ride and then I mend my pace anon.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?