#2 Plank Weight Changes 60 Seconds
Set up a couple of 5 lb free weights and a couple of 2.5 plates or soft weighted ball piled together.
Move into the plank position with elbows on the ground and the pile of weights is to one elbow.
Lift the hips level with the shoulders; keep the butt same level as the shoulders.
Holding the core steady, move the weights from one elbow to the other.
Try not to twist in the back when moving the weights back and fourth.
Repeat moving the pile of weights from one side, then the other for a total of 1 minute or count slowly to sixty.