They are an amazing workout! I have been teaching Jumpboard classes for years and they are varied and so.very.effective! It’s mind-blowing actually. If you’re really serious about getting fit and strong, this is a win-win. Cardio- Check!Strength Training-Check!Low-Impact-CheckBuilds Bone Density-Check!Feel Good Endorphins-Check!Calorie Burn-Check!Tones…EVERYTHING-Check! All in just under and Hour. And the best thing is that…