input question: To wear the Iron Man Arc Reactor around your chest.

output answer: Attach it to a heart rate monitor strap.

input question: how do you get rid of split ends in your hair?

output answer: go get your hair trimmed and condition it regularly.

input question: how to melt chocolate

output answer:
Place chopped chocolate in the top of a double boiler or a heatproof bowl set over (not in) a saucepan of simmering water; cook, stirring occasionally, until melted, 2 to 3 minutes.