Related Clues:

• Hassle, for short
• Fret about, slangily
• Pore output
• Salty fluid secreted by the body
• Exercise beads?
• 'No __!': 'Sure!'
• "No __!": "Sure!"
• Male perspiration?
• A gym rat may break one
• Great effort, so to speak
• Apt rhyme for ''fret''
• Exertion: worry
• Intense work, so to speak
• Worry about waste
• Hard effort, metaphorically