Sometimes people need to fool around!

laxation and recreation: This phrase could simply mean that people need to take time off from work, studies, or other responsibilities to enjoy hobbies, leisure activities, or social interactions.
Letting loose: It might suggest the importance of letting go of inhibitions and enjoying oneself without feeling too serious or uptight.
Spontaneity and adventure: This phrase could also imply the value of spontaneity and seeking out new experiences.