showing, using, or characterized by caution: a cautious man; To be cautious is often to show wisdom. Origin of cautious. 1630-1640.
A sedentary lifestyle increases the risk of developing diabetes, hypertension, colon cancer, depression and anxiety, obesity, and weak muscles and bones. According to the CDC, nationally in 2000, 78% of the population was at risk for health problems related to lack of exercise, which is regular and sustained physical activity.
Clearly the trend in current medical studies is that sitting and sedentary activities for many hours each day can contribute to an increased risk of significant medical conditions including cardiovascular disease and heart attacks.