There is lymph liquid and 4–6 litres of blood in the human body, the lymph being filtered in 600 –700 lymph nodes. All liquid is moving through 400.000–500.000 km of vessels, 7.000 km in each kg of soft tissues. Only one litre of the blood is moving because of the pumping pressure of the heart. The rest of the liquids move because of the motions and activity of the muscles and other soft tissues.
Our conventional and modern habits of slouched sitting, tight clothing, poor nutrition and physical inactivity greatly disturb these sensitive systems. This results in various health problems and discomfort. The sensitivity of the circulation can be demonstrated by closing a vein on the back of the hand by pressing it ever so slightly with a finger. This illustrates in a small scale how dramatically the circulation must be disturbed because of our circulation-hostile lifestyle.
Using a two-part saddle chair will significantly reduce the pressure on the soft tissues in the pelvic area, keep the clothes looser, widen the angles of the limbs and activate muscle function, thus activating circulation and the lymphatic system. The effect is most powerful in the typical pressure areas (caused by conventional office chairs), such as thighs, buttocks, genital area, back and lower limbs. Blood circulation speeds up also in the typical tension areas, such as the upper back.
Lower limbs benefit from the riding-like sitting too, since the hip and knee angles become wider, making it easier to use the legs and enabling the so called "muscle pump” to work properly. Sitting bones carry most of the body weight, which in turn eases the pressure on the thighs and buttocks. For example, the Gluteus Maximus muscle remains safely outside the pressure area.
A smart sitter also uses loose trousers or skirt, and underwear that are not too tight. The most beneficial alternative for the circulation would be to use loose-fitting clothes that do not press the waist.