In addition to his classes at the dojo, the Grand Master trained anytime he was free to perfect his skill and techniques. His bujutsu masters were all very strict and closely guarded the secrets hidden within the kata (technique patterns). Each movement was shown only a few times. Then, the students were expected to discover from experience, the special body dynamics which allow the waza (technique) to work in a real situation.
To truly master these techniques, Grandmaster Tanemura drilled each technique several thousand times. Eventually, he discovered many kuden points, and made the technique a natural part of his movement. Living nearby woods, rice fields and riverbanks, he used everyplace as his dojo. Having natural objects such as trees, stones, animals always available, he used everything as his training partner.
Trees and stones were used to develop punching and kicking power, and served to strengthen the hands and feet. He'd punch and strike a tree until his knuckles bleed and his toes were numb. But, Takamatsu Sensei taught him a much better way to develop an effective defense. Tanemura sensei was told that a true martial artist passes by a crowd unnoticed. If his hands are callused in a certain way, people can tell that he is some sort of martial artist. Even the way that different budoka (modern martial art practitioners) stand or walk, can reveal much about their training habits. In a fight, the less an opponent knows about your strengths and weaknesses, the better chance you have to survive.
On clear nights, the Grand Master would also practice with Yari (spear) and Rokushaku Bo (six-foot staff). In a rice field, with the crickets and the praying mantises, he'd thrust for the center of the moon to improve his accuracy, and pierce barely visible leaves, as they swayed in the wind. With animals (usually dogs), it was easy enough to get them to attack. As they'd leap to bite him, he used taisabaki (natural body movements, in this case, evasion) repeatedly, until the animal would simply give up.