Please choose the correct ending to complete the given sentence: Health: [header] How to do kundalini yoga and meditation [title] Know when and how often to do this breathing exercise. [step] This breathing exercise can be done when you're feeling tired or drained emotionally. The result of doing this exercise should be that you feel revived, re-energized and ready-to-go.

Ending1: You should practice this exercise for at least 20 minutes at a time each morning. [substeps] It can be used as part of any yoga practice for at least 30 minutes. Ending2: [title] Put the water bottle in your mouth. [step] Drink 30 minutes prior to the practice. Ending3: [substeps] These exercises can be done 2-3 times a day. Experts recommend trying this exercise in the mid-afternoon (2-4 pm) to help avoid that afternoon slump. Ending4: [title] Make a list of questions you might want to ask yourself during these sessions. [step] Looking at your list could help you stay on track with your exercises and other habits.

Answer format: ending1/ending2/ending3/ending4