Portable devices for exercising muscles in the ankle, foot, and/or leg, and related methods

A method of exercising an ankle, foot, and/or leg of a user, the method comprising:

• positioning a foot of a user onto a pedal of an exercise device, the pedal being pivotably connected to a pair of supports and having a neutral position relative to a pivot axis of the exercise device;
• rotating the pedal about the pivot axis in a first direction, toward a first support of the pair of supports, with the foot, against a first resistive force;
• rotating the pedal about the pivot axis in a second direction, toward a second support of the pair of supports and away from the first support, with the foot, against a second resistive force;
• and
• moving the exercise device from a closed configuration to an open configuration prior to positioning the foot of the user, wherein moving the exercise device to an open configuration includes moving the first support from a position flush against the pedal to a position extending from the pedal and moving the second support from a position flush against the pedal to a position extending from the pedal, wherein the first and second supports form a triangular support for the pedal when in the extended position.