Laughter

"Laughter is good medicine." Kelly Marker.

Research from John Hopkins University notes these benefits from humor, mirth and laugther:
reduces stress, anxiety and tension
promotes psychological well-being
raises self esteem
improves interpersonal interactions and relationships
enhances memory
increases pain tolerance
elevates mood
increases hope, energy and vigor
enhances creative thinking and problem-solving
increases friendliness and helpfulness
exercises respiratory muscles.

Let's be sure to laugh many times every day. In my opinion (for good mental health), this laughter should never be at anyone else's expense.