Vin flexed experimentally. Her muscles didn’t seem any bigger, yet she could feel their strength. It wasn’t just in her muscles, however—it was everything about her. Her bones, her flesh, her skin. She reached out to her reserve, and could feel it shrinking.
“I’m running out,” she said.
Kelsier nodded. “Pewter burns relatively quickly. The vial I gave you was measured to contain about ten minutes’ worth of continuous burning—though it will go faster if you flare often and slower if you are careful about when you use it.”