In this episode of MASS Office Hours, Dr. Eric Trexler and Dr. Mike Zourdos answer questions submitted by listeners and viewers in the live chat. Topics include response variation, individualizing training, movement screens, rest days, protein intake recommendations and consistency across the week, the interference effect, exercise variation and joint pain, muscle and strength loss during deloads, volume cycling and “resensitization,” the effects of alcohol on metabolism and body composition, the pros and cons of caffeine, and much more.