Honestly, it is easier to ask the question, who cannot train with Quantum bands? I do not recommend children under the age of 9 only because they do not have the focus and attention span necessary to safely train with bands. Besides that, anyone can train with Quantum resistance bands as long as they learn how to safely use them and incorporate appropriate regressions and progressions. That is where Resistancebandtraining.com and The Band Gym comes in. As you review the Resistancebandtraining.com you find a lot of free training and teaching that will help you get started. If you are looking for more focused programming and coaching, The Band Gym will provide you step by step training and direct coaching.