Silver Sneakers at BodyShock Join the movement Lose weight. Increase your energy. Improve your overall well-being. All of this is possible with SilverSneakers. If you’re a group retiree, or part of a Medicare Advantage or Medicare Supplement Health plan, you may already have a SilverSneakers membership. This active adult wellness program is offered to many Medicare plans across the nation. Click here for more information about Silver Sneakers.