Patent ID: 7153237

Claim:
A method for enhancing isometric or isotonic resistance during exercise, comprising the steps of: providing an annular exercising assembly sized and shaped so as to fit in a user's mouth around an entire circumference of a user's lips and a user's corner lip portions and in front of an outside surface of the user's teeth, the annular exercising assembly having an exterior member, an interior member having an exterior side, and a trough formed by the connection of the exterior member to the interior member, the trough extending around the entire circumference of a user's mouth and being sized and shaped to accept a user's upper lip area, a user's lower lip area, a user's right corner lip portion, and a user's left corner lip portion therein, and wherein when the user's lips and the user's corner lip portions are inserted in the trough, the user's upper and lower teeth are kept in a substantially non-engaged position, and the exterior side of the interior member is adjacent the outside surface of the user's teeth, and the annular exercising assembly further having a passageway extending from the exterior member to the interior member with the passageway allowing for unimpeded breathing of the user; positioning an airway protection assembly in relation to the passageway of the annular exercising assembly for allowing the passage of air and preventing the entry of foreign objects into the user's airway; placing the annular exercising assembly in the user's mouth around the entire circumference of a user's lips and a user's corner lip portions; compressing the annular exercising assembly between the upper lip area and the lower lip area; and performing a predetermined exercise while the annular exercising assembly is compressed between the upper lip area and the lower lip area.