Please choose the correct ending to complete the given sentence: Health: [header] How to do brain training [title] Learn something new. [step] Keep your brain stimulated and active by picking up a new habit. Practicing something new forms new neural pathways in your brain.

Ending1: Repeating the same action over and over strengthens these newly formed brain pathways. The more you use your brain, the better it will work. Ending2: Mindfulness is a great introduction to new habits. Don't just rush to start learning, you can ultimately become a better learner by learning something new every day. Ending3: The more you learn something new the more ideas you will have. For example, learning the basics of a musical instrument builds a new passion for the instrument. Ending4: It's a new skill that both people who do brain training and their professions get used to. [substeps] Get out of the habit of following a strict routine, or instead try something new.

Answer format: ending1/ending2/ending3/ending4