A training garment is provided for use by a swimmer. The garment includes a layer of material that is configured to conform to a body portion of the swimmer, and a plurality of pockets that extend from the layer of material for increasing drag on the swimmer as the body portion is moved in a preselected direction of movement. At least one of the pockets has first and second conditions. In the first condition, drag is increased by that pocket on the swimmer as the body portion moves in the preselected direction of movement. In the second condition, drag is not increased by that pocket on the swimmer as the body portion moves in the preselected direction of movement.