This
exercise is a progression of the bridging exercise with arms out
to the side. Simply bringing your hands over your trunk narrows your
base of support, making this more difficult.
If
you're not quite ready for this move you can add a little more
difficulty to your bridging with arms out to the side exercise by doing
the above exercise but with a little less air in your ball.
If
you want to make the above exercise more difficult try adding more
air to your ball. The point of contact your ball makes with the floor
is smaller creating a less stable surface.
Repeat this ball
exercise 3
times, hold each for 10 seconds.
Repeat
this ball
exercise 5 times, hold each for 10 seconds.
Repeat this ball
exercise 3
times, hold each for 30 seconds.