Please choose the correct ending to complete the given sentence: Health: [header] How to create a meal plan for swimmers [title] Determine resting metabolic rate. [step] This is your daily calorie requirement without taking added activity into consideration. Up to 75 percent of calories burned in a day are burned due to normal activities, such as sitting and breathing.

Ending1: The other 25 percent are available for extra physical activities. In order to ensure you have enough extra calories, you need to determine a few things first. Ending2: 15% of your calories come from sports. [title] Order a lightweight water filter filter for swimmers. Ending3: [title] Give yourself an adequate space to exercise. [step] The amount of space you'll need to exercise is based on what types of forms of exercise you are used to. Ending4: Aim for somewhere between 70 and 80 percent of calories needed per day. [substeps] You should aim for a range between 100 and 140 calories daily.

Answer format: ending1/ending2/ending3/ending4