A trainer breaks down weighted pull-up form: start with elbows fully locked and pull until your chin clears the bar. Falling forward during the movement is preventable with proper mechanics.
What's this girl doing? This, this is going to be bad. Ah, she fell over. She fell forward. The girl in this video would have saved herself a lot of embarrassment if she simply put a step. The biggest thing with a chin-up is we want to always start our chin-up with locked elbows. The elbows have to absolutely be locked, and at the top, our chin has to be over the bar.
