exhale

By following how quickly these isotopes left the body through urine, the scientists were able to determine how much carbon dioxide the athletes exhaled and, in turn, estimate total calorie expenditure.

By late afternoon, most test-takers walk out of school gates, exhaling with relief and embracing the family members waiting outside.

Iruña feels relaxed, as if exhaling after the madness of the past hours.

Drenched in sweat, crewmen gasped for air as oxygen levels fell and carbon dioxide levels rose closer to the lethal zone every time someone exhaled.

Although the full City Council will still need to vote on the matter sometime next year, Nicholas and his parents finally feel like they can exhale because their bees are safe.