Tobacco package warning messages ("Smoking kills", "Smoking causes heart attacks and strokes", etc.) could be stuck to a seemingly safe product you use every single day - office chairs. The study carried out on more than 200 000 participants showed that sitting more than 6 hours per day increases risk to die of a heart attack by 54%, of premature death by 20-40%, and of colon cancer by 24%. You might be thinking that this all is about lazy fast food fans only. Unfortunately, no. Scientists argue that workouts in the evening and taking part in marathons won't save you from sedentary lifestyle consequences. Unless you plan to totally change your life by becoming a forester or beekeeper that would allow you to work outdoors, you'd be glad to know that nowadays office life is getting less harmful to your health.