Getting a great biceps workout doesn’t need to be complicated, and it doesn’t require many words to explain. In fact, it’s a whole lot easier to just watch the video above as Men’s Health Fitness Director B. Gaddour shows you his “ARMageddon Challenge.
Por si algún profe quiere investigar sobre estas 70 apps y ver si le son de utlidad. Yo uso algunas // The 70 Best Apps For Teachers And Students - Edudemic. These are listed as itunes apps, but I'm sure a lot of them can be found for Android as well.