Physique

Just like you would on a normal flat bench press, you should use leg drive on an incline bench. I like to specifically use when you're initiating the concentric (that is, at the point where you're pressing up).

I generally prefer to hold my breath during the rep versus exhale on the concentric on pressing exercises just so I don't "run out of breath" before I finish the rep - especially as I get closer to failure

One of the most underrated aspects that will determine your motivation to go to the gym is the vibe of the gym you're going to.
It doesn't necessarily mean you need to go to the most expensive gym, but the gym should ideally match the vibe that you ideally would want during a workout. You'll be so much more motivated more engaged during your workout.

3 things that helped me stay lean all year.

The machine low row is pretty much made for training the lats. That said, if you feel it more in your biceps and forearms. You're likely not using the proper seat height. In that case, you should raise the seat height until your elbow makes a 90-degree angle at the top of the concentric when your shoulder is pulled back.

If Ab crunches are too easy, something significantly harder to try are dragon flags.
Honestly recommend cheating and going a bit into hip flexion since staying completely hip extended makes it even harder.

If you feel like you have weak biceps, here's a great way to help push beyond failure on incline dumbbell curls or any dumbbell curl, for that matter. That is, by starting your set with a supinated wrist and once you reach failure, transition into a supinating curl where you have a neutral grip at the bottom and then supinate on the concentric.

If you find it hard to balance on walk and lunges or even conventional stationary lunges, you should try reverse lunges instead. They're more stable since the working leg remains under your center of mass throughout the entire range of motion.

If you don't know how to perform a regular deadlift safely without lower back pain, then you won't know how to do the same on a Romanian deadlift. So here is the key thing you should remember:
Keep the bar as close to you as possible at all times

How many steps should you take when you walk out of squats?
One of the most overlooked aspects of barbell squats is your initial walk out before you start the set.
Ideally, you want an efficient walkout to avoid wasting energy and help make sure that your stance is consistent every time you squat.