How much nature do you need?

my photo of star magnolia

How much nature do you need? 

What is the dosage that you need: Do you need a spoonful a day a big bowl of it? Five minutes? 

 What is enough to sustain? What is enough to maintain balance?  

Does a big dose of it impact us like testosterone? like protein? or like a water soluble vitamin?

And what counts as "nature" -- will houseplants do?  The sight of something wild from inside the house down the street?  

Maybe a walk in the park is a 25mg capsule while a 3-day hike in the forest is a 1000-mg horse pill.

And after nature, what else should we talk about in terms of minimum daily doses? talking to friends, quiet, sunlight, connecting to family, making art making some thing music.

Our brains probably crave different amounts of it... so, through homeostatis we edge towards things that we need.  But maybe also we're in a constant state of craving... a constant state of depletion.