Abstract: A kit for use in physical therapy by a person includes a tension release device and a set of instructions associated with the kit. The set of instructions is in the form of written instructions and/or audio/visual instructions. The set of instructions includes an instruction to place pressure on a muscle of a person with the device, an instruction to stretch the muscle, and an instruction to strengthen at least one core muscle. The instruction to place pressure may be provided before the instruction to stretch, and the instruction to stretch may be provided before the instruction to strengthen. The kit may include other tension release devices. A method of physical therapy for use by a person includes providing a tension release device to apply pressure to a muscle of the person and providing a set of instructions to perform.