i really don't understand this ? could you walk me thru this?

Intro to Nutrition Case Study Assignment-Summer Online Case Study Kayla is a 22-year old college student who wants to be a nurse. She is 5'4 and weighs 135 lbs. She works part time on the weekends at a clinic to get experience. Kayla knows about a balanced diet, but still sometimes skips breakfast or lunch throughout the week when she is busy with work, her social life or studying. When she is feeling extra fatigued during the day she will drink an espresso or diet coke to wake up. Kayla enjoys yoga, running, and swimming and tries to work out at least 3-4 times a week for 60 minutes. She wants to be healthy and be at her ideal weight which is 125 lbs. Sometimes she gets mad at herself for eating \"unhealthy foods\" like hamburgers and french fries. Kayla has been particularly stressed out lately with her classwork, boyfriend, job and applying to LPN schools. Over the past two months she has gained 5 pounds. After looking online, Kayla saw that writing down a three-day journal of all the food she ate and how much exercised was the best way to hold herself accountable. Here is her record: Day 1 Breakfast Snack Lunch Snack Dinner Day 2 Breakfast Snack Lunch Exercise 1- small oat bran muffin 1 cup 1% milk 1-medium banana 12 oz Diet coke Salad, Vegetable, tossed 1 cups w/ chicken Ranch dressing 2 tbsp Ranch Water Venti Caffe Vanilla Frappuccino Light Blended Coffee w/ whipped cream Lean cuisine Chicken Parmesan 12 oz Diet Coke 6:30 pm Went for 30minute bike ride Skipped breakfast Coffee drink, Frappuccino 1 serving Lean Cuisine Roasted Turkey and Vegetables 10:00 am yoga class Snack Dinner Day 3 Breakfast Snack Lunch Snack Dinner Snack Water Grapes 1 cup Water 1 apple, large 1 cup blueberries Light Yogurt, 1 pot 12 oz Diet Coke Smart Ones English Muffin Sandwich Diet coke, 12 oz skipped Skipped, water Coffee drink, Frappuccino 1 serving Oatmeal, apples and cinnamon 1 medium banana Light yogurt, 1 pot 1.5 mile run @ 5:30 pm 2 mile run @ 8 am Ice cream, vanilla cup Questions: 1. Visit http://www.caloriecount.com to determine her calories per serving and total calories for each day from her food journal. (10 pts) Total for Day 1: oat bran muffin. 178 cup 1% milk. 113 105 Total for Day 2: Total for Day 3: Average calories consumed per day: 2. Check out chapter 7. Calculate Kayla's BMR (basal metabolic rate) based on her height (5'4) and weight (140 lbs). BMR is the amount of energy your body needs at rest. The average of 0.9 kcal per hour for an average female. (10 pts) Weight must be calculated in to kilograms The formula for BMR is: Weight in kilograms x 0.9 = kcals per hour Kcals per hour x 24 hours Kayla's BMR: 3. Use your answer from question 2 to find Kayla's calorie need (10 pts) Sedentary or mostly sedentary (sitting at a desk) multiply your BMR by 1.0-1.39 Lightly active (you do 30-60 minutes of easy physical activity each day), multiply your BMR by 1.4-1.59 Moderately active (you do 60 minutes of moderate physical activity each day) multiply your BMR by 1.6-1.89 Very active multiply your BMR by 1.9-2.5. At least 60 minutes of moderate physical activity each day plus 60 minutes of vigorous activity or do at least 120 minutes of moderate activity each day Kayla's calorie needs: 4. Calculate Kayla's BMI (10 pts) Formula: (Weight in Pounds / (Height in inches x Height in inches) ) x 703 Kayla's BMI: 5. Look at page 242 in your book and assess what category Kayla's BMI falls in (10 pts): Category: Is there any problem with using BMI as an indicator of health? Explain. 6. a. Is it likely that Kayla will lose weight, gain weight, or stay the same if she continues with her current eating and exercise habits? Explain. (5pts) b. Do you think Kayla should be concerned about her current weight? Explain. (5pts) 7. Is Kayla's \"ideal weight\" of 125 lbs reasonable for a woman of her height? Why or why not? (10 pts) 8. When you are looking at Kayla's food diary, do you think she is eating a healthy diet? Why or why not? What are some suggestions you could make to her? (10 pts) 9. Is skipping meals a good idea? Why or why not? Do some research and see if skipping meals really can help with weight loss. (10 pts) 10. A. When she is tired, Kayla drinks diet coke and coffee. What do you think may be to blame for her lack of energy? Provide a few examples. (5 pts) b. What problems are associated with drinking a lot of soda and coffee, even if they are diet? (5 pts)