This is the low volume approach. 1 set to muscular failure, meaning gun to your head another rep is not possible. Heavy duty training requires an adequate rest period between workouts, a minimum of 72 hours but preferably every 96 hours. Every rep will include a 4 second concentric and 4 second eccentric(this does not provide any hypertrophic benefits, it just makes the exercise SAFER). Lastly, if you are a beginner, focus your first month or two on nailing down your form. And remember you'll only get better at exerting yourself as time goes on. Training to failure will be easier as you train more and more thus giving you better workouts every time.