In a recent study, researchers from the Tel Aviv University scanned the buttocks of inactive people and found their muscles were shrinking and breaking down due to lack of exercise.
The study found that fat cells thrive in the buttocks of those who lead a sedentary lifestyle, causing thick layers of fat to develop deep inside muscle tissue, the Daily Mail reported.
Insufficient activity and a poor diet are the main causes of desk derriere but other factors also play a role.
"The hip flexor muscles, found at the front of the hip, become overactive and tight if an individual spends all day sitting," explained Chris Jones, professional head of physiology at Nuffield Health.
"In response, the three key muscles that give the buttocks their shape
