It's a lot lot easier to take people down from than from in front: Takedowns can be some of the most grueling work in grappling. Not only is the work physically demanding, it can as you go straight into many of your opponents best such as and other strangles. Often it's a lot easier to slip behind them first and THEN your takedowns. Here is Gordon Ryan Ryan practicing his takedowns from standing rear body lock that proved decisive in his ADCC 2022 Super Fight victory