Summarize this article:

When you're sad, you may only want to lie around--and that's okay for a while. Eventually though, it can help to push yourself to get up and move around.    Physical activity stimulates the release of endorphins which act as feel-good chemicals for the brain. Walk around the block, play fetch with your dog, or have a dance party with your best friend. People with a sense of humor are more resilient in tough life situations, so try to find ways to laugh. Hang with a buddy who's known to be a jokester or queue up your favorite comedy film or TV show. A great way to move through sadness is by spending time on hobbies or passions. These are often anchors that bring joy despite unhappy circumstances. If you love playing tennis, schedule a few matches this week. If you like to bake, try out a new recipe with a loved one. Alcohol, drugs, junk food, and excessive shopping can feel good when you're sad. These activities only numb the pain temporarily, though. They may even plant seeds for addictive or destructive behavior down the line.  Resist the temptation to turn to such activities when you're sad by keeping them out of reach. Limit your access to alcohol, drugs, or junk food (stock your fridge and pantry with healthy foods) and withdraw the amount of cash you need for everyday expenses and hide your credit cards. Instead of engaging in unhealthy coping, make time for positive  self-care activities.

Summary:
Get physically active. Laugh. Do things you enjoy. Avoid unhealthy coping.