Please choose the correct ending to complete the given sentence: Health: [header] How to beat the sickness blues [title] Have a movie marathon. [step] Studies show that movies improve the immune system by boosting natural killer cells. They say laughter is the best medicine and it is true.

Ending1: Watch your favorite movies a few times a week, especially popular ones like simon & garfunkel and thunderbolt. [substeps] Commit to watching a movie once a week. Ending2: Watching comedies can have a great effect not only on your mood but also by shrinking the duration of your illness. Watch all of the movies you've been meaning to watch but just haven't had the time-in a row. Ending3: Watching a movie can do more than just energize you. Seek to make movies hour and hour long, and start with the classic. Ending4: [substeps] Make sure there is a movie that is not too distracting for you. It is always good to get your mind off the sickness by having something to watch.

Answer format: ending1/ending2/ending3/ending4