We confirmed that embodied cognition improves relaxation of the fixation in insight problem solving. In this study, the embodied cognition was manipulated with eye movements in an eye-tracking task. To achieve a solution, a problem solver is required to relax the fixation that guides search in an incorrect problem space, and to shift the search into a correct one. We conducted two experiments. The participants' eye movement was controlled using an eye-tracking task prior to or during insight problem solving. Experiment 1 confirmed that the tracking task performed prior to the insight task reduced the participants' fixation guiding the incorrect search. In Experiment 2, the participants who engaged in the tracking task during solving the insight task found a correct target faster just after beginning to generate crucial hypotheses that violate the incorrect fixation than those who did not. We concluded that a stimulus accompanying embodied cognition affects fixation generation and also reduces the intensity of fixation once generated in insight problem solving.