Please choose the correct ending to complete the given sentence: Health: [header] How to avoid menstruation [title] Check with your doctor first. [step] Make sure you are healthy enough to manipulate your cycle without serious or uncomfortable side effects. Discuss your reasons for wanting to delay menstruation and how long you wish to do so.

Ending1: During this time, your doctor can put the necessary information into place to properly evaluate your situation. [substeps] Skip meals, exercise, drink lots of water, and avoid smoking. Ending2: Discuss any previous menstrual cycle that you do have and whether you want to wait for the menstrual cycle to end. Make sure you get enough rest, such as seven to nine hours a night. Ending3: This approach will help your doctor address the situation quickly and accurately. [substeps] If you feel uncomfortable talking with your doctor, change the conversation to something more positive and funny. Ending4: S/he will help you decide which method is most appropriate. [title] Ask for a prescription for norethisterone (progestogen).

Answer format: ending1/ending2/ending3/ending4