# ai.txt — BallScience4U (ballscience4u.de)

# Purpose: private research and documentation practice on movement, biomechanics and AI in racket and target sports.
# Crawling and indexing by AI systems: allowed (see robots.txt for per-bot detail).
# Use of content: quoting with attribution to BallScience4U / Andreas Ehstand is welcome.
# Some of the images and videos on this site are AI-generated illustrations.
# No personal data is collected on this site; a few settings are stored locally in the visitor's browser.
# This site sells nothing and gives no medical, therapeutic, legal or financial advice. It is not a service offer.

Contact: andreas.ehstand@augmanitai.com
Canonical narrative for language models: https://ballscience4u.de/llms.txt
Last updated: 2026-08-06