obesity Another main problem is the lack of physical activity and low energy expenditure that is strongly associated with becoming overweight. While many tasks can be achieved smoothly with minimum physical effort thanks to modern technology, no wonder that sedentary lifestyle is becoming more and more common. Many contemporary occupations involve using computers as well and therefore force workers to spend much more time sitting at their desks. In Canada, for example, the average adult spends about 70% of total waking time sitting. To tackle this problem, non-profit organizations can launch health awareness campaigns to alert people about the health risks of physical inactivity and encourage them to practice sports at their leisure time. Many events like biking, jogging, hiking and running competitions could be organized for citizens to participate in on a weekly basis. Employers could also implement work-place based intervention programs which explain to workers how to maintain a reasonable level of physical activity during their working hours. For instance, many companies promote simple active behaviors such as taking stairs instead of lifts, walking to colleagues’ desks instead of using telephones and emails, go for a group walking during lunchtime and so on.