You can also apply heat or take a warm bath to relax your muscles.

CNN: What causes muscle cramps?

What sets Alexza apart is its counterintuitive scheme to apply heat to turn pills or liquids into a fast-acting smoke.

FORBES: Puff Daddy

And a marketplace void now exists to recapture waste heat and to apply it to create electricity.

FORBES: Recycling Wasted Heat and Power Could Clear the Air