They may not lift barbells but they still lift “weights”. This particular Shaolin Monk is shown building shoulder and upper-body strength with a wooden log. ~ Any kind of object can build strength, so long as it is trained with in a progressive manner.
“First-phase Basic Underwater Demolition/SEAL students feel the pain of log physical training in this 1975 picture taken on the Silver Strand in Coronado, California. The team is in unison, and though all experience the struggle, they learn that teamwork, and not brute strength alone, helps accomplish the task.”