English to Chinese Social Sciences Sports / Fitness / Recreation

Enter into competition. Put your pride on the line. Bet the guy in the cube next to you that you can lose 10 pounds more quickly than he can. Challenge your portly neighbor to a gym-off: First one to miss a day of lifting loses. Keep the stakes high and the payoff interesting -- a significant amount of money or something you can't stand losing. You'll be amazed how your motivation peaks!