Increased anxiety is the latest condition to be linked to prolonged sitting.
Watching TV, working at a computer or playing electronic games have long been associated with physical health problems such as obesity, heart disease, type 2 diabetes and osteoporosis.
Sedentary behaviour has also been associated with depressive symptoms.
Now, research by Melbourne's Deakin University has linked sitting time to anxiety, a mental health illness estimated to affect more than 27 million people globally.
The debilitating illness can lead to people worrying excessively, and having physical symptoms such as pounding heartbeats, difficulty in breathing, tense muscles and headaches.