Possible Clues:

• Exhortation to stay cheerful in difficult circumstances
• Mixed drink including last of Irish at home that's said to raise spirits
• "Be strong"
• Don't despair
• "Don't be discouraged"
• Keep optimistic feature on expert
• 'Don't let it get to you'
• Exercise requiring words of encouragement
• Stay strong -- exercise
• Exercise that requires a lot of pull