A good leg drive in the bench press isn’t just pushing your heels straight down to the ground as hard as you can and pushing your butt off the pad pretending that it's "helping".
The leg drive has a job, which is maximizing the ability to stay tight, stable and with an ideal set up, even under heavy loads.
There are 2 steps I cue to go through;⁣⁣
On the 𝐄𝐜𝐜𝐞𝐧𝐭𝐫𝐢𝐜 𝐩𝐡𝐚𝐬𝐞, while lowering the barbell on your lower chest, if you don't use the right leg drive, chances are the weight will crush the set up and the upper back will lose tightness because of this. The result is a set up collapse.⁣⁣

To make up for this:⁣⁣

1) Personally 𝐈 𝐥𝐢𝐤𝐞 𝐭𝐨 𝐜𝐮𝐞 𝐚 𝐥𝐢𝐭𝐭𝐥𝐞 𝐞𝐱𝐭𝐞𝐫𝐧𝐚𝐥 𝐫𝐨𝐭𝐚𝐭𝐢𝐨𝐧 𝐚𝐭 𝐭𝐡𝐞 𝐤𝐧𝐞𝐞𝐬 as the bar goes down, in order to fire the glutes and keep our upper body tight even under the pressure of the barbell.
⁣⁣During the 𝐜𝐨𝐧𝐜𝐞𝐧𝐭𝐫𝐢𝐜, you want to slide on the bench.⁣
2) As the barbell 𝘴𝘪𝘵𝘴 𝘰𝘯 𝘶𝘴 you want to literally slide back on your bench, trying to basically bring your butt closer to the upper back.⁣⁣
Remember, this technique will work best when you'll try to work with heavy percentages of your 1RMs.
It's an advanced technique and in my opinion it shouldn't be cued too soon to beginners since most people will try to rely too much on it, not really understanding its purpose, and probably ending up like the ❌ version. ⁣⁣