Things You'll Need
Instructions
Insert a funnel into the mouth of a standard latex party balloon.
Fill the balloon with cornstarch up to the neck, remove the funnel and tie a knot to close the balloon. Pour out a bit of the cornstarch if the balloon is too full to tie a knot.
Draw a design on the balloon, such as a smiley face or a caricature of your boss, with a permanent marker.
Grip the ball in your fist, inhale and hold for a few seconds. Exhale as you release your grip and repeat. Perform this exercise an even number of times with each hand to develop your grip equally.