Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to adopt an intermittent fasting diet [title] Consult your doctor before beginning an if diet. [step] Talk to your doctor, and explain that you're considering an if diet. Ask about the pros and cons of the diet, and be sure to inform your doctor of any pre-existing medical conditions.

Ending1: There will be no food or supplements needed, but you should still talk to your doctor about whether or not food is normal in your diet. [substeps] Bulk diets: many fasting diet options plan to provide dietary and nutrient supplements. Ending2: [substeps] The if diet can have a dramatic effect on your daily metabolism. Do not fast without consulting with your doctor if you are pregnant or are unwell. Ending3: [title] Understand the benefits of reducing the risks associated with a fasting diet. [step] For some people fasting does not cause weight gain but instead improves the function of their bodies. Ending4: If your doctor has recommend you for an alternate fasting diet, inform your physician that you're considering a alternate one. For example, if you are looking to lose 1.5 pounds this week, your doctor might suggest that you eat 1500 calories a day instead of 200 or 3500.

Answer format: ending1/ending2/ending3/ending4