Novel dumbbell

The utility model discloses a novel dumbbell, and relates to the field of sports equipment, particularly to a novel dumbbell. The novel dumbbell comprises a dumbbell rod and dumbbell heads, wherein both ends of the dumbbell rod are connected with the dumbbells; the dumbbells are in a regular hexagon shape; an hollow cavity is formed in each dumbbell head; an injection hole is formed in the outer side of each dumbbell head, and a sealing lid fitted with the injecting hole is further arranged on the outer side of each dumbbell head; a grip strength arm is arranged in the middle of the dumbbell rod; the dumbbell rod is hinged with the grip strength arm through a rotary shaft; a spring is fixedly arranged between the dumbbell rod and the grip strength arm; and anti-skidding rubber sleeves are arranged on both sides of the dumbbell rod. The novel dumbbell has the benefits of simplicity in design, low cost, high practicability and high safety; flowing substances can be injected into the hollow cavities in the dumbb