need to adjust body & mind

When the mind is properly adjusted
And quietly applied
The Way is attainable;
But when you are too fervently bent
On it, your body grows tired;
When your body is tired, your spirit
Becomes weary.
When you spirit is weary, your discipline
Will relax, and with relaxation of
Discipline, there follow many distractions

- Sutra of Forty Two Chapters