Useless workouts are the ones that include exercises that don't tone you up or slim you down and include a wealth of useless exercises. To avoid exercises that won't help you towards your workout goal, check out this list of worthless exercises you shouldn't be doing.
What are the most useless exercises? For many years people have been pushing a ton of unnecessary exercises on us. Here are the ones you can skip in favor of more important things, like eating. But, if you're looking for some serious workout ideas I suggest the ab workouts, or these bicep building exercises.