Most Popular Books
- The All-in-One 28-Day Military Calisthenics Challenge for Men Over 50: A Beginner-Friendly Bodyweight Program with 15, 30 and 45-Minute Workouts, Fully Illustrated and Video Included
- Die 20-Minuten Military-Calisthenics-Challenge für Männer: Komplettes 12-Wochen-Programm für Anfänger zum Muskelaufbau, Fettabbau und maximale Körperk

