G-Force was training with her ability in the gym oblivious to everything around herself as she formed a nexus point around an imaginary point in space. Several small objects were swept towards the invisible target as it exerted a gravity 8x that of the earth. The loose objects were nothing more than standard tennis balls and struck each other as if fired from a canon and then compressed into a tight knot flattening together.
G-Force smiles briefly as she admires her work then reverses the nexus effect which makes the balls explode in every direction at once. Several of the escaping balls try to strike her to verr away as if they slid over an unyielding surface.
Rather than leave a mess G-Force recreates the attractive force over the basket the balls came in and once all have assembled she drops the effect then watches as they fall into the container.
She heads over to the weight machine and performs several sets of reps to work on her physical strength. Looking around she blushes as she resets the machine to simulate a 2 ton dead lift. She enhances her physical strength with a gravity field and enjoys lifting the impossible weight several times before stopping then resetting the machine to normal. 
She's still slightly embarrassed by her present status as a member of a Super hero team and though she knows she dose what she dose to help others still can't shake the feeling of vanity