Please choose the correct ending to complete the given sentence: Health: [header] How to stay fit while you're pregnant [title] Consult your doctor about your fitness regimen and plan. [step] If you want to maintain your fitness during pregnancy, first speak with your doctor about whether or not it's safe to continue your current activities. There are some circumstances where it may be unsafe for you to do certain activities.

Ending1: If you want to lose weight, talk to your doctor about how to modify your eating plan. [substeps] Avoid exercising frequently, moving around, and/or drug using, which is a no-no to early pregnancy. Ending2: Your doctor may recommend that you keep that in mind when you are pregnant if you have a physical or mental health condition that is preventing you from doing those activities. [substeps] A doctor may also suggest that you practice certain safe behaviors that may increase your physical fitness. Ending3: There are also certain types of activities that may influence whether or not you can lift a weight heavier than normal. Understanding what you can and cannot do may help you plan the time you can exercise even in the early stages of pregnancy. Ending4: [substeps] Exercise during pregnancy is generally good for you and your baby. Your doctor might suggest you not exercise if you have heart and lung problems, high blood pressure, cervical problems or vaginal bleeding, or placenta previa, are experiencing or are at risk for preterm labor.

Answer format: ending1/ending2/ending3/ending4