Answer:
I am the minerals vital for your good health.
I can wave my hands at you but I never say goodbye. You are always cool when with me even more so when I am high!
Turns me on my backs and open up my stomach. You will be the wisest of men though at start a lummox.
Part carbon part water I am poison to the fishes. Many falsely claim my name I am the pause that refreshes.
I am owned by every man, though my length differs. Their wives use me after getting married. What am I?
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.