sweat out

verb3

1. •
   To sweat; to secrete sweat because of heat, nerves etc.
2. •
   To endure or go through (an ordeal).

   • They developed a tremendous respect for the gravel crunchers after sweating out a few rounds of artillery and observing at painfully close range how rocky a Korean hill can be. — 1952
3. •
   (slang) To accomplish or achieve, usually through endurance or effort.

   • I'm going to sweat out fifty more push-ups more before I hit the rack.