Activate your core and build strength that'll transfer to any big lift. How? Do the side plank march.
Not only does it build lateral core stability like a regular side plank, the marching action builds your bracing technique while moving at your hips – kind of useful for lifting.
Added benefits include hitting your adductors in a really nice way that's often neglected. If you lack adductor strength, you're just asking for a groin injury.
If you struggle to do this drill (especially on one side and not the other) then it could be pointing to a serious lack of core or adductor strength. Lifters who are experiencing pain or regular injuries on one side of their body find a big difference between their left and right sides during the side plank march. Simply working on that can improve your training.