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Description of Study: This study investigates moods, stress levels, eating, and physical activity over the four seasons. This is an observational study and we will not ask you to change your behavior. This study is being conducted by Lisa Jahns, Ph.D., R.D. at the Grand Forks Human Nutrition Research Center in Grand Forks, ND.

Participants will come to the Center in each of the four seasons (spring, summer, fall, winter) and wear activity and heart rate monitors for 7 days. You will come in for monthly visits between the seasonal visits for a brief morning visit. You will also be asked to complete 3 dietary questionnaires each month online. If you are interested in joining this study please answer the following questions.

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* 1. How much do you weigh?

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* 2. How tall are you?

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* 3. Are you a woman between 40 and 60 years of age?

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