Possible Clues:

• Fitness-motto starter
• Fitness motto starter
• Asset-exploitation alternative
• ''___ or lose . . .''
• '___ or lose...'
• Start of an exercise buff's motto
• "___ or lose ..." (part of a fitness motto)
• "___ wisely"
• "Secret Smile" line "And you ___ only for me"
• '___ in good health'