Training to Failure
High-intensity training can lead to injury, especially with free weights, which are more damaging compared to machines. Training to failure is more effective with higher rep ranges, as low reps may not yield significant gains. The definition of failure has evolved; it's now about recognizing form breakdown rather than pushing to the absolute limit.In this clip
From this podcast

Mind Pump Podcast
Does Training To Failure REALLY WORK For Muscle Growth? | Mind Pump 2466
Related Questions
Training to failure vs. higher reps
Should I train to failure when doing heavy lifts?
But technical failure comes when failure is close on machines, for example. My technique got a little bad on the last rep, but it was still a full range of motion. However, I could probably not do many more. Am I training too close to failure for strength adaptations?