Possible Clues:

• Gee! There's many a saint is a physical jerk
• Exercise is popular, James heard, Stan is doubtful
• Many G and Ts poured out in tumbler
• Supple performer
• Athlete in the skill of strength, balance and agility
• Athlete like Simone Biles
• Athlete on a beam
• Suni Lee, for example
• Athlete on the pommel horse or parallel bars
• Athlete trained in strength, balance and agility