James T. Kirk/Personal interests/Personal combat

Kirk's command style frequently brought him in close proximity to his enemies, often resulting in hand-to-hand combat. His idiosyncratic martial-arts style used hand chops to the neck, wrestling and judo throws, roundhouse punches, two-fisted swings and open-hand slaps in varying combinations, and even drop kicks. One or two of Kirk's blows overwhelmed a variety of enemy guards and henchmen. In addition, Kirk regularly performed dives and rolls, either to evade phaser fire or to attack an opponent, thereby often jumping off walls and other fixed elements.
A typical example of Kirk's fighting style in a more extended bout occurred in 2265 on the surface of Delta Vega, in the attempt to kill his friend Gary Mitchell. () 
While typical examples of his wrestling and Judo abilities were seen when the Orion spy Thelev assaulted him, and when he used a judo throw to disarm the Redjac entity which had taken the form of Hengist. ()
At times, a larger, more powerful opponent clearly out-classed Kirk, leaving him to his wits, the aid of his crew, or pure luck to see him through. Pitted against the Gorn captain in 2267, he held his own for a time, until his injuries forced withdrawal and a search for a more efficient weapon. ()
In 2255 and again in 2268, he wrestled a ferocious Mugato of Neural. When the massive ancient android Ruk attacked Kirk on Exo III in 2266, Kirk could do little but hold on for the ride. ()
On the Shore Leave Planet in 2267, Kirk was shocked by the appearance of Finnegan, his Academy nemesis, who had not seemed to age. The two proceeded to slug each other until both were bleeding and exhausted. Perhaps the longest fist-fight of his life, it was clearly the most satisfying. ()
Kirk fought his friend and first officer Spock on three occasions when the half-Vulcan lost his normal emotional control. A series of slaps delivered to Spock in 2266 resulted in a blow that sent Kirk over a table. In 2267, after necessarily cruel taunts, Spock tossed Kirk back and forth across the transporter room, regaining control just before he crushed his captain's skull. Spock's blood fever during his pon farr of 2267 made him so dangerous in the koon-ut-kal-if-fee ritual fight that Dr. McCoy was forced to falsify Kirk's death before Spock could kill him. ()
Kirk was constantly looking to improve his arsenal of combat techniques. Upon witnessing Hikaru Sulu perform a body throw on Agmar on Phylos in 2269, he asked Sulu to teach him the technique sometime, since it might come in handy. ()