Reps in Reserve (RIR) Training Explained: Science, Myths, and Whether It’s Hurting or Saving Your Gains
Depending on who you ask, Reps in Reserve can be a science-backed way to train hard without cutting into your recovery, or a spreadsheet-driven excuse to avoid training hard. So, which is it? If you’ve ever finished a set and thought, “I probably had two more reps left in the tank,” That’s RIR in a…