Here’s a modern, credible, minimalist, and efficient list of textbooks focused on men's flexibility, organized by skill level: novice, intermediate, and advanced. This selection emphasizes practical application and performance optimization.
### Novice
1. **"Stretching: 40th Anniversary Edition" by Bob Anderson**
- Overview of basic stretching techniques ideal for beginners.
2. **"Dynamic Stretching: The Revolutionary New Warm-up Method