Can a pill help you breathe easy in the cold, thin air?

This study is testing whether existing, approved drugs can help red blood cells work better under extreme stress from cold temperatures and low oxygen, like those found at high altitudes. Researchers will take blood samples from 50 healthy adults to see how the drugs affect the cells' energy, flexibility, and oxygen-carrying ability in lab tests. The goal is to understand if these drugs could one day help people, like military personnel, maintain their physical and mental performance in harsh environments.