Hi Jack, your questions are why I created the TRX Fitness Freedom Programs - trxtraveller.com/trx-programs/ split, intensity, frequency, and experience determine the Workout Program. Drop me an email anytime if you have any questions - hello@trxtraveller.com
hey Matt, they are Blood Restriction bands. They help with the pump and to keep blood pooling in the muscle to aid catabolic breakdown. I would stress I don't use them often and they certainly are no magic solution or will every replace good form and mindful technique