Dear Thunderbell developers: Please provide an instructional video for reverse-gravity situations.
Hello Mr. Levine of Earth's Teeter Thunderbell instructional video. We have recently received transmission of your exercise regime from Earth. And though we believe the Thunderbell to be an excellent, space-saving exercise solution, it is difficult for us to determine its precise efficacy given one quirk about Planet P2022ZE3: Gravity is reversed here.
From our interpretation of your Earth language, we understand in theory that the Thunderbell combines the usefulness of a dumbbell, barbell, kettlebell, medicine ball in one piece of equipment. The problem is that when we we try to follow along with the instructional DVDs we cannot replicated the movements that Mr. Levine demonstrates. For instance, the overhead kettlebell swing tends to fling us out into space rather than work our quads and hips.
Even what you call "bicep curls" are a misnomer for us here on P2022ZE3. All of our effort is spent trying to keep the dumbbell DOWN, not raise it UP. Though presumably it is a good tricep workout. (Beeteedubs: It's convenient that our bodies are basically the same as yours but with some weird facial differences. Your 'Star Trek' television program is surprisingly accurate in that regard.)