PROBLEM TO BE SOLVED: To provide a mat for stretching capable of providing a high stretching effect compared with a conventional configuration.SOLUTION: An air bag 6 is provided to a stretching part 3 that is curved and protruded in a mountain shape along a longitudinal direction so as to allow a conversion between a weakly curved state in which the air bag 6 is deflated and a strongly curved state in which the air bag 6 is inflated and the curvature is stronger than the weakly curved state. In a state that a part of a body is placed on the stretching part 3, air is supplied to the air bag 6 and the stretching part 3 is converted from the weakly curved state to the strongly curved state over time. Then, supply of air is stopped and the strongly curved state of the stretching part 3 is caused to be maintained.COPYRIGHT: (C)2015,JPO&INPIT【課題】従来構成に比べて高いストレッチ効果が得られるストレッチ用マットを提供する。【解決手段】 前後方向に沿って山状に湾曲隆起するストレッチ部3にエアーバッグ6を設け、エアーバッグ6がしぼんだ弱湾曲状態と、エアーバッグ6が膨らんで弱湾曲状態よりも湾曲が強くなる強湾曲状態とに変換可能とする。そして、ストレッチ部3に体の一部が載った状態で、エアーバッグ6に空気を供給して時間をかけてストレッチ部3を弱湾曲状態から強湾曲状態に変換し、その後、空気の供給を停止して、ストレッチ部3の強湾曲状態が維持されるようにする。【選択図】図6