Your body shape determines your drag coefficient. Shapes that allow air to flow smoothly and easily past them are called streamlined. These shapes are found on wings, rudders, stabilizers and struts of aircraft. The motion of the air follows nice, orderly paths as shown in Fig. These shapes have very low drag coefficients and produce very small drag forces.
Streamlined shapes can pass through the air very fast.
Shapes that significantly disturb the air flow are called bluff bodies. The air does not travel smoothly past bluff bodies. The air flow on the downwind side of the body is chaotic and random. The air goes this way and that way. This region is called a wake or as skydiver's like to call it, a burble.