We've all heard about the power of positive thinking, but a recent study found that people who think they're getting fit actually get more positive benefits from activity, according to a Reuters Health article. The study examined hotel housekeepers over a period of four weeks. Some of the housekeepers were told that their work duties gave them enough activity to meet the Surgeon General's health guidelines  . Another group of housekeepers were told nothing. After four weeks, the housekeepers who believed their work activity counted as exercise lost weight and body fat, and their blood pressure went down. The results of this study suggest that it's important to understand and believe in the positive benefits of your activity. So here are a few things to think about the next time you exercise: Just thirty minutes of quick walking each day can greatly reduce your risk of a heart attack. Even your housework -- like yard work and house cleaning -- can help you burn calories and increase your fitness levels. Weight bearing activity just a few times a week can build bone density   and reduce your chances of developing osteoporosis  . Three 10-minute workouts  throughout the day are just as good to your health as one long workout. Moderate   amounts of exercise have been linked to lower rates of heart disease, stroke and even cancer. Strength training can help make daily activities like carrying bags or laundry feel easier. Regular exercise will reduce stress, keep you in a good mood and improve the quality of your sleep. It can be inferred from the passage that   _  .
thought is more important than activity housekeepers lead a happier life than workers positive thinking does good to our health if one wants to get fit, think more
Question: We've all heard about the power of positive thinking, but a recent study found that people who think they're getting fit actually get more positive benefits from activity, according to a Reuters Health article. The study examined hotel housekeepers over a period of four weeks. Some of the housekeepers were told that their work duties gave them enough activity to meet the Surgeon General's health guidelines  . Another group of housekeepers were told nothing. After four weeks, the housekeepers who believed their work activity counted as exercise lost weight and body fat, and their blood pressure went down. The results of this study suggest that it's important to understand and believe in the positive benefits of your activity. So here are a few things to think about the next time you exercise: Just thirty minutes of quick walking each day can greatly reduce your risk of a heart attack. Even your housework -- like yard work and house cleaning -- can help you burn calories and increase your fitness levels. Weight bearing activity just a few times a week can build bone density   and reduce your chances of developing osteoporosis  . Three 10-minute workouts  throughout the day are just as good to your health as one long workout. Moderate   amounts of exercise have been linked to lower rates of heart disease, stroke and even cancer. Strength training can help make daily activities like carrying bags or laundry feel easier. Regular exercise will reduce stress, keep you in a good mood and improve the quality of your sleep. It can be inferred from the passage that   _  .
A. thought is more important than activity
B. housekeepers lead a happier life than workers
C. positive thinking does good to our health
D. if one wants to get fit, think more
Answer: