Here's the "maths" formula:

O + (N xS) + Cpm/T + He

Where "O stands for being outdoors and outdoor activity, N is connection with nature, which is in full bloom now, S is socialisation with neighbours and friends, Cpm stands for childhood positive memories, T is the mean temperature which is now usually warm, and He is holiday expected."

Brilliant.

Have a great solstice weekend.