Someone who is strength training should have the flexibility to go on a weekly run and remove a day on the weights. That's heresy to some coaches who want to keep you in the gym.
Pain in exercise normally arises from both subjective feelings, and also the stimulation of the nervous system. Is virtual reality (VR) an effective means of reducing the perception of pain?
Training smart means understanding how to work the boundaries of your redline state. Often that's more intensity without more volume with better results.
Gym etiquette is clear: Get off your cell phone, dingus. People who spend time on their cell phones never get a truly effective workout. Don't believe that? You can't argue with science.