DO NOT CROSS YOUR LEGS I bet quite a few of you were like me....started to read this with your legscrossed...so hard to break this bad habit! Those who often cross their legswhen sitting for a long period of time, 3 unhealthy things will happen: 1 Their backbone tends to become'C' shape 2 They will have neck aches andbackaches on one side 3 For ladies, the shoulder willtend to slant one side causing the bra strap to slip down the slanted shoulder. Try not to cross your legs whensitting.