How long can you keep the shelf full? This trick can ensure that you can hold the plank longer from now on.
Group pressure
Group pressure is the secret that can make you last longer. This is apparent from a survey conducted among 68 regular visitors to a Pilates studio.
The command
Two groups were instructed to hold the plank for twice as long as possible. They were allowed to rest for three minutes in between. One group was told during the break that the other group had held the plank longer. Nothing was sought against the other group.
Hold on longer
The group that was told that the other group had done better held the plank 5 percent longer on the second attempt than on the first attempt. The group that had not heard anything kept the shelf 18 percent shorter the second time.
