Worse, Giordano explains, the strength of your glutes (gluteus maximus - the muscles in your butt) impacts your pelvic stability, pelvic rotation, and your core.
It means it's not just your butt that will be affected, but your entire workout and physical strength.
THE CAUSE
1. YOU'RE PROBABLY SITTING WRONG
"In most office jobs you're not moving so you're getting stuck in a position - and usually it's not a correct position," Giordano explains.
In Scandinavia - ranked as the "happiest" part of the world by the United Nations - 90 percent of office workers have access to standing work stations.
Studies have shown the act of standing up increases our productivity and dramatically lower the rates of obesity, heart disease and type 2 diabetes.
3. USE A FOAM ROLLER
Giordano says we should all be using a foam roller every day.
"Mobility is the number one thing," Giordano says, as he sings the praises of foam rollers.
A foam roller is a large, cylinder foam block used to give yourself a massage and ease tension in the muscles.