Please choose the correct ending to complete the given sentence: Health: [header] How to sleep with bipolar disorder [title] Exercise early in the day. [step] Exercise is a great way to burn off energy and relieve anxiety. However, it can also stimulate you.

Ending1: When you exercise, aim for 150 minutes of moderate-intensity exercises that strengthen your bones and muscles. [substeps] Avoid being vigorous for 30 minutes before you get into bed. Ending2: A light jog or brisk walk at least 30 minutes before bedtime is a great way to start yourself on a healthy sleep schedule. [substeps] Making exercise a part of your normal sleep schedule is a good way to burn off energy as well. Ending3: Although you want to be active, for instance by dancing, you are only shutting off 90% of your energy until you wake up in the morning. As soon as you start feeling it, you should walk to work or to a gym. Ending4: Don't exercise in the hours just before you go to bed, as this can boost your energy levels and make it harder to go to sleep. [substeps] Schedule your exercise in the morning or afternoon to get an energy release without stimulating yourself more.

Answer format: ending1/ending2/ending3/ending4