As body alignment specialist Lauren Roxburgh told Well + Good last year, “When you are able to sit down and stand back up from the floor ... habit of sitting on the ground, the frequency of ...

Russian twist Sit up straight with your knees bent and ... Keeping your knees and shins off the ground, tap your right hand to your left shoulder and then place it back on the ground.

Many of my personal training clients list performing a full sit-up as one of ... lower back to arch off the ground when ...