Train to Failure? What does this mean & why Reps in Reserve is 👑
Every once in a while, the topic of training to failure will circulate around social media and arguments will ensue: "High reps/light weight" vs "Low reps/heavy weight" and RPE (rating of perceived exertion) vs RIR (Reps in Reserve). Each person will have a "my way or the highway" opinion about it, but as I tell my clients, any opinion that doesn't start with "it depends 🤷♀️", you really need to be skeptical of 😂. On the topic of training to failure, since some of you are doing my 14-day training trial, we need to clearly define what this means and why we do it. There are two forms of FAILURE: Technical Failure- a breakdown in form/technique but another rep could be performed Muscular Failure- the muscle is unable to perform a concentric contraction to move the weight being lifted. Both are utilized to measure failure. Typically, the free weights and more complex movements are going to be technical failure depending on safety aspects/experience lifting. Machine/cable work can be geared toward muscular failure. Training to failure has to be measured somehow. In Proud Nutrition Coaching, we use Reps in Reserve (RIR). RIR measures the number of reps shy of failure. For HYPERTROPHY TRAINING (growing muscle) we stick with 0-2 RIR. I'll only do 3 RIR for absolute newbies or you're getting back into the gym after considerable time off, then only for like 2 weeks or so. The research shows that 0-2 RIR is the most optimal for lean tissue growth. That is why we do it. Now, the disadvantages of doing 0-2 RIR are: you are a poor estimator of RIR (something that comes with more training experience) so your stimulus can be underdosed, requiring more sets in the gym ie more time spent. The advantages, if you do it right, is we can manage fatigue, less mentally draining, and you're safer on technical lifts. Oh, and muscle growth😤 Ok, now back to Training to Failure. The closer you get to failure creates a high motor unit recruitment (basically, more of your muscle is required to work MEANING more muscular tension = greater hypertrophy stimulation). We do this so we aren't wasting our d*mn time in the gym. This is also why "toning" by doing high reps/light weight is BS. If you are going to do high reps, you're still going to be close to failure at the end of those 20-30 reps lmao. Hard reps are what matter most.