Answer:
Born of sorrow, grows with age, you need a lot to be a sage. What is it?
I am the minerals vital for your good health.
I tremble at each breath of air and yet can heaviest burdens bear.
I am a shiny metal sheet that covers BBQ food.
What happens once in June twice in August and never in May?
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk