A training appliance for practicing combat sports, contact sports or grappling sports, includes a punching bag having an envelope including a closing wall forming a bottom wall at the lower end thereof, and a second closing wall at the top end. The appliance includes a horizontal base for supporting the bag on the ground, that can be immobilized on the ground and on which the punching bag rests, by the wall thereof. A mechanical connection is established between the base and the wall, authorizing the pivoting movement of the bag around the point of contact between the wall and the sole. The bag also includes at least one unit for returning the same to the vertical position.