The Scythe Book – Mowing hay, cutting weeds, and harvesting small grains with hand tools by David Tresemer contains a six-page introduction to the Alexander Technique and how it helps with scything. The relevant section begins with:
Awareness of the dynamics of one’s own body can be employed to improve one’s ability at mowing, and, indeed, vice versa. Most helpful for this understanding is the knowledge provided in the teachings of F. Matthias Alexander.
And it ends with:
The scythe draws my primary control out beyond my own body to relate to the earth.